Malicious PDF — malware analysis report

Static analysis result for SHA-256 010e07c486930981…

MALICIOUS

PDF

94.7 KB Created: 2021-08-18 02:24:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-17
MD5: 659ef12e4d1f63b4d02a6587de1bec14 SHA-1: a4e20007fb9c38a073a5a43ce9ab9d43bedf7d9c SHA-256: 010e07c4869309813bf45fb89c4598436b05a7484ff8df1211297baf090dbaac
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains embedded JavaScript and a link farm pointing to multiple compromised websites, suggesting an attempt to redirect users to malicious content. The presence of these elements indicates a likely phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9925

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://naseeha.org/wp-content/plugins/super-forms/uploads/php/files/8e6e5f22597f2ab5568d30a172fa58c0/53583736162.pdf In PDF document text
    • https://aartipalette.com/userfiles/file/zepibalagobenixexaz.pdfIn PDF document text
    • http://rexant.by/upload/editor/files/xexejeni.pdfIn PDF document text
    • https://iphonerepairservice.nl/app/webroot/files/userfiles/files/levuxolevev.pdfIn PDF document text
    • http://texmet.pl/userimages/file/81793576659.pdfIn PDF document text
    • http://abwfinlay.com/uploads/files/zewawajamoke.pdfIn PDF document text
    • https://www.llgnjinc.com/wp-content/plugins/super-forms/uploads/php/files/d1f262cb8465c619485e61ea8889d5b1/32984159956.pdfIn PDF document text
    • http://exclusivelimoservice.com/ckfinder/userfiles/files/82250333842.pdfIn PDF document text
    • https://socialacademy.gr/wp-content/plugins/super-forms/uploads/php/files/7ddf6cb97e962e2a06ed7196c104909d/14128448422.pdfIn PDF document text
    • https://whitesal.com/data/images/file/5712_20210716092532.pdfIn PDF document text
    • http://jiin-torng.com/uploadfiles/20210816234508.pdfIn PDF document text
    • http://kvbm.org/pds/userfiles/files/66696091897.pdfIn PDF document text
    • http://www.ishvani.com/www/js/ckfinder/userfiles/files/66987038779.pdfIn PDF document text
    • http://iaestedresden.de/userfiles/file/22570608820.pdfIn PDF document text
    • http://staging.impactredevelopment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160839a34f3626---3378669142.pdfIn PDF document text
    • https://alcc.vn/wp-content/plugins/super-forms/uploads/php/files/rc78clvs8qnd36fcob8hqcbs9v/rijifez.pdfIn PDF document text
    • https://shining4u.com/wp-content/plugins/super-forms/uploads/php/files/87738e9a59c330b5e3ce2d131d3e43b7/44622031167.pdfIn PDF document text
    • https://drinkpoint.com/uploads/files/81457767328.pdfIn PDF document text
    • https://robertmatzuzi-massagetherapist.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160767514a6ec6---tuvusojaxivixo.pdfIn PDF document text
    • https://interesttour.com/wp-content/plugins/super-forms/uploads/php/files/569427cbc8a21f39f020bb7fd669b7cc/22505908104.pdfIn PDF document text
    • http://cbstav.cz/file/maxiwewasar.pdfIn PDF document text
    • http://coral-travel66.ru/admin/ckfinder/userfiles/files/letojufedotutevize.pdfIn PDF document text
    • http://sieuthibongda.net/ckfinder/userfiles/files/tusutagonoribugogowa.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/cv9VXjIrmdE/uplcv?utm_term=how+to+get+free+money+and+lp+on+sims+freeplayPDF link annotation
    • 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f4e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4E3 11032 bytes
SHA-256: 5768963acdf9073417ec273d3c91130f7168717d7b7411fec644afb5f61fab7b
font_01_sfnt_off00010e5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E5C 17096 bytes
SHA-256: efe28749540827e20af8912e361572ce9379a503b47484d554f805abb202f04e
font_02_sfnt_off00013b81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B81 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off00015392.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15392 16860 bytes
SHA-256: 446effe84e62b9b7ae790f5a407645746d5956ccedba6ee29853276350da80a2

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