Malicious PDF — malware analysis report

Static analysis result for SHA-256 60ff3f0384c4d21b…

MALICIOUS

PDF

90.5 KB Created: 2021-09-12 17:53:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-01
MD5: 3301772b4df3873f65f87a024d5f9945 SHA-1: cd2db8336ef5124f66d09f9ec898516980c51e39 SHA-256: 60ff3f0384c4d21bcbb11eb55b964743558ef634f8b87d43d004fde4e45fa02c
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9915

Heuristics 6

  • 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.
  • 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://philabc.ru/uplcv?utm_term=agnathavasi+telugu+full+movie+online+watch+free PDF link annotation
    • https://hamasataccessories.com/userfiles/files/51073741051.pdfIn PDF document text
    • https://autotoner123.com/home/autotone/public_html/ckeditortest_WORKING/ckfinder/userfiles/files/41088823135.pdfIn PDF document text
    • http://tatugigo.com/ckfinder/userfiles/files/wozemi.pdfIn PDF document text
    • http://hurtmar.pl/Upload/file/zosekoxetisiguzumipazuwu.pdfIn PDF document text
    • https://vallejardin.com/wp-content/plugins/super-forms/uploads/php/files/19bd84c0b91b117602ecfe0dadeb3ba0/40949391573.pdfIn PDF document text
    • https://www.audifonosdoshoydos.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613649ec3df42---muvege.pdfIn PDF document text
    • http://rungruangsteel.com/public/upload/userfiles/files/dabunepi.pdfIn PDF document text
    • https://dascalita.ro/app/webroot/files/userfiles/files/89038779825.pdfIn PDF document text
    • http://caratow.eu/userfiles/file/82069968264.pdfIn PDF document text
    • https://autoradiator.mn/uploads/ckfinder/files/57208668377.pdfIn PDF document text
    • http://ggbris.com/slbdavbatala/userfiles/file/faxetugesibag.pdfIn PDF document text
    • http://theffirm.com/userfiles/file/15796198525.pdfIn PDF document text
    • http://csaladiegyteruautok.hu/userfiles/files/61879464016.pdfIn PDF document text
    • http://kkagro.com/media/images/upload/file/79522999352.pdfIn PDF document text
    • https://macleanpinesdrivingschool.com.au/wp-content/plugins/super-forms/uploads/php/files/3a5ff7037f1042c7a24d9ac89729c000/jarumegibixivomul.pdfIn PDF document text
    • http://unicorn-furnitures.com/d/files/79211203144.pdfIn PDF document text
    • http://manpukulivermore.com/uploads/files/ganoxejapop.pdfIn PDF document text
    • https://mcdelandes.ca/uploads/file/71385813434.pdfIn PDF document text
    • http://sushrutproctology.org/ckfinder/userfiles/files/larivejipowakag.pdfIn PDF document text
    • http://temple.mo/userfiles/file/vodoxorizekalipamejurawig.pdfIn PDF document text
    • https://semangkabiji.com/contents/files/21974608761.pdfIn PDF document text
    • https://obermeyer-modemarkt.de/upload/file/kazit.pdfIn PDF document text
    • https://lostsoulsmemorialnj.org/wp-content/plugins/super-forms/uploads/php/files/aff8d3492ed8909ebd686ee6356fa5cf/6986352709.pdfIn PDF document text
    • https://chokysitohang.com/Uploads/userfiles/files/wexedodatesozetode.pdfIn PDF document text
    • http://nhatminhtrading.vn/app/webroot/uploads/files/rorizuvuguladoka.pdfIn PDF document text
    • http://multiflex.ru/userfiles/file/gorifikowelo.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_off0000fca9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCA9 11016 bytes
SHA-256: 0d5cd5c8b2bb948c98d462cd5c43198c3c359f0a4865d5dec33ac46090779fc3
font_01_sfnt_off00011634.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11634 17740 bytes
SHA-256: 3320785ac4bfde9440f6bfc70ce88d950ec2e37fb065f35157986fd4e5b8cf85
font_02_sfnt_off000143a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x143A5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1