Malicious PDF — malware analysis report

Static analysis result for SHA-256 6079c904355cefc4…

MALICIOUS

PDF

76.3 KB Created: 2020-11-19 01:42:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 5e3dd9dec446bcbfd191b0eda7f0b143 SHA-1: df35b56be14df465833b0f500acc2b5859597740 SHA-256: 6079c904355cefc4b4cf7a75e7a81e810410cde09088b51a6d4b98406f3f24e3
156 Risk Score
Tags
free-cdn-ebook-manual-lure

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. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://trafffi.ru/strik?utm_term=vuze+plus+4.7.0.2+crack+++activation PDF link annotation
    • https://dibulikari.weebly.com/uploads/1/3/4/2/134235408/xuzetokovosasife.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380084/normal_5fac4c018494b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412606/normal_5faa35a43c0d1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382949/normal_5fb2f2e4316fd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420588/normal_5f9b3b8a6ef9c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/29406ee3-54ba-471a-8b67-2118c9fe2c7d/tuvukefidanon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc74e189-35aa-4b24-a257-debc8e10b553/mafipogisimutofalisupase.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93f85ddc-6178-4600-8e72-25fe2feaba59/honda_cbr_600_f4i_performance_specs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/016930f0-31da-4ade-a82f-4cb04aaa9421/5708930318.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2066e54-7398-4a94-8933-75f0e758d1f7/2271167554.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee1626eb-2252-444f-895f-8b07b62a45c0/exo_latin_root_meaning.pdfIn PDF document text
    • https://s3.amazonaws.com/rodiligarexo/katun_photo_love.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04af21fe-23fb-4509-be26-523c5a094c8c/call_of_duty_zombies_mod_apk_unlimited_money.pdfIn PDF document text
    • https://s3.amazonaws.com/vipinib/mitchell_labor_guide_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee36dac2-245c-452b-b114-e873c574e64f/bigob.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eac5a281-0986-465b-b055-39eb53674143/guzipigorawafuratefuroxi.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://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 7

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cc78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC78 5540 bytes
SHA-256: 83a857b27a0193c681ab3695f70d151343a706442fc674c7a3d4f826d0cc99d2
font_01_sfnt_off0000df82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF82 11744 bytes
SHA-256: ddff8a5d76cd45bfab48e95f70d65e3e7aed255557c50e9482e170d8e619233b
font_02_sfnt_off0001068b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1068B 18752 bytes
SHA-256: 9d15febcbe1a89c06ebfc25b74aae1aaab8af3986d264d5a5dfc4df9760167ca

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