Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0301e2017486bf2…

MALICIOUS

PDF

90.9 KB Created: 2021-09-02 23:13:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: eb71697b28f27096243d8b75e24b747e SHA-1: 11b06ffe72aea3012a7ea40c8794c0aa8a07da2c SHA-256: c0301e2017486bf21d6617f5fc6d84bd16f8a9cd5ef537bd9591bd4d6ee645db
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external links, many pointing to compromised WordPress sites, suggesting an attempt to host malicious content or redirect users. The 'SE_CALLBACK_LURE' heuristic indicates the document's content is designed to trick users into calling a fraudulent phone number, a common tactic in phishing and tech-support scams. The ClamAV detection further confirms its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9906

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://allytemp.ru/uplcv?utm_term=va+state+vehicle+inspection+manual PDF link annotation
    • https://canvasations.com/wp-content/plugins/super-forms/uploads/php/files/p58rdm27qrj4akclovcvuvaql5/perivixulunavosexuv.pdfIn PDF document text
    • https://www.potravinyav21.cz/ckfinder/userfiles/files/69341162584.pdfIn PDF document text
    • http://pokwuttibut.com/file_media/file_image/file/delanubiran.pdfIn PDF document text
    • https://yptea.com/data/fckeditor/files/37311678495.pdfIn PDF document text
    • https://homecareangels.ca/files/files/files/98301995166.pdfIn PDF document text
    • https://traveltokiev.com/wp-content/plugins/super-forms/uploads/php/files/0i25sqfl9jnglkltvjvpoikg04/zekapidoragukogigibej.pdfIn PDF document text
    • http://mattstergamer.com/wp-content/plugins/super-forms/uploads/php/files/mssnfa64g1ffu79eblqul72jm4/wedobaxawonuwufonidivit.pdfIn PDF document text
    • https://sdyh.gr/wp-content/plugins/super-forms/uploads/php/files/l9l2t8r636duhclpgere5evur4/kumoxibewiwadasapunipa.pdfIn PDF document text
    • http://farashimirooz.com/files/xusajibo.pdfIn PDF document text
    • https://brillimet.com/uploads/files/202108251804029986.pdfIn PDF document text
    • http://mea-travel.pl/userfiles/file/midomugapuxu.pdfIn PDF document text
    • http://www.sg-callenberg.de/wp-content/plugins/formcraft/file-upload/server/content/files/160af6f1197f98---3748186424.pdfIn PDF document text
    • https://www.sharpeningfactory.com/wp-content/plugins/formcraft/file-upload/server/content/files/16095a23388562---vuromixib.pdfIn PDF document text
    • http://kanchanaspa.com/ckfinder/userfiles/files/jolise.pdfIn PDF document text
    • http://cnc-soustruzeni.cz/files/file/24881394168.pdfIn PDF document text
    • https://www.colours-of.com/wp-content/plugins/super-forms/uploads/php/files/4kr11vjt48a56iqkanq3locims/58095206498.pdfIn PDF document text
    • https://creativesilhouettes.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1609886d679627---5112587023.pdfIn PDF document text
    • http://porpora.info/imagenes/imagenes_contenidos///41329829049.pdfIn PDF document text
    • https://baxsporthorses.com/userfiles/file/vinodobulasajuxo.pdfIn PDF document text
    • https://noventa.cz/media/files/file/bovawetidusizatatetawiti.pdfIn PDF document text
    • https://eliteswimmingpoolsinc.com/wp-content/plugins/super-forms/uploads/php/files/p3gugqfonub77fn7h5u9bnlva7/galafezelujuramudoju.pdfIn PDF document text
    • http://phunggia.biz/userfiles/file/12711196001.pdfIn PDF document text
    • http://gok-maciejowice.pl/js/ckfinder/userfiles/files/43876799271.pdfIn PDF document text
    • https://fitnessrev.net/wp-content/plugins/super-forms/uploads/php/files/cos9b06rc5fsevqipim7p8b6fk/wolugogolarilujezuvata.pdfIn PDF document text
    • http://springswellness.net/wp-content/plugins/formcraft/file-upload/server/content/files/1609bd4b2d8a87---rolebamawefabevus.pdfIn PDF document text
    • https://www.stamfordtaxis.com/wp-content/plugins/super-forms/uploads/php/files/jg20n18hvefiodnokmc0l73ppd/jakesizonugeromebomubovor.pdfIn PDF document text
    • https://arerp.kr/data/file///titokolopibamelapawaw.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fd7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD7C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00011593.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11593 10672 bytes
SHA-256: 51df7be07bf318a7fdbc26ecd2d298e40a541e89a8fd9a36abc2585342d44877
font_02_sfnt_off00012de3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12DE3 18364 bytes
SHA-256: f1a59d5f00ae9eebf9de28519235c33fbc19eb0e442315b675e8523a21d47a6b

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