Malicious PDF — malware analysis report

Static analysis result for SHA-256 60126ad628c46c39…

MALICIOUS

PDF

79.3 KB Created: 2021-09-16 22:31:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 8eff45bf074ca9080a82e3de23bfe8c2 SHA-1: 5372b879f4624fecd8f2983ffd8047bfd2904fec SHA-256: 60126ad628c46c399f39a8504dab5d055760ee67ceca48773080e3b89de64434
146 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. It contains numerous embedded URIs, including one pointing to a raw IP address, suggesting it functions as a link farm to distribute phishing or malware payloads. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' further supports this, indicating the document is designed to host many links on disposable domains.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9949

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://pixomot.ru/uplcv?utm_term=power+of+a+product+property+of+exponents PDF link annotation
    • https://batdongsandothanh.vn/luutru/files/23633893721.pdfIn PDF document text
    • https://internationalmedia.com/userfiles/file/62642078598.pdfIn PDF document text
    • https://tuabogadoangel.com/wp-content/plugins/super-forms/uploads/php/files/3dcb618ecfc71e9638126fdef872425f/39648783855.pdfIn PDF document text
    • https://neksav.com/upload/ckfinder/files/bejomekeriger.pdfIn PDF document text
    • https://pierreseche.fr/userfiles/file/gojibaboxup.pdfIn PDF document text
    • https://thefencedocumentary.ca/adminfiles/file/66203270055.pdfIn PDF document text
    • http://lammensfilip.be/uploads/files/gemepodate.pdfIn PDF document text
    • http://windmill-bv.com/userfiles/files/8889994031.pdfIn PDF document text
    • https://kaemsp.org/upload/editor/file/kabajuzeforijalox.pdfIn PDF document text
    • https://dondepodemosir.com/userfiles/file/xupijiwodu.pdfIn PDF document text
    • https://kamarkosong.com/contents/files/bifovejepazuxuzirez.pdfIn PDF document text
    • http://104.156.58.56/~web2inbox/wp-content/plugins/formcraft/file-upload/server/content/files/16131a95bc9fa9---genev.pdfPDF link annotation
    • http://marjoleintje.nl/include/userfiles/58307351497.pdfIn PDF document text
    • http://vwtint.com/userData/board/file/33403201826.pdfIn PDF document text
    • http://webbyshoe.com/fckeditor/userfiles/file/sakodo.pdfIn PDF document text
    • https://www.alertgy.com/wp-content/plugins/super-forms/uploads/php/files/b492513cfa47f15a0275231755896ed8/gikuboneleg.pdfIn PDF document text
    • http://mylodge-naoshima.com/images/blog/file/65919280205.pdfIn PDF document text
    • http://mbjarrahi.com/UploadedFiles/New/file/davifetun.pdfIn PDF document text
    • https://apc-algercentre.dz/ckfinder/userfiles/files/tafukegiguxolekedazoz.pdfIn PDF document text
    • http://xinyuemu.net/assets/202109/files/20210916151746799870.pdfIn PDF document text
    • http://fishngrill.iorderfoods.com/uploads/files/25658295409.pdfIn PDF document text
    • https://babetravelling.com/ckfinder/userfiles2/files/68925119443.pdfIn PDF document text
    • http://www.peritaonline.es/ckfinder/userfiles/files/wasiwaxonovolota.pdfIn PDF document text
    • http://qwerty.pl/_data/file/kufinuzi.pdfIn PDF document text
    • http://wangguanhardware.com/userfiles/file/76248857676.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_off0000cbe1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBE1 19348 bytes
SHA-256: d681050fe05933202d89499ff26ce580c03d8b0279a01e7b74acc3e9b58bcd39
font_01_sfnt_off0000fe2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE2C 10880 bytes
SHA-256: b8ee73827033fab6f8716574aeda7c6b9d207582f9a2146537c0dbe72699b51f
font_02_sfnt_off0001179e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1179E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1