Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c1f713ff3fc76b0…

MALICIOUS

PDF

75.2 KB Created: 2020-11-25 08:54:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 0553c1692bfe68aaa591733f735309be SHA-1: 2ed0af6fc097935f5b8d5e55766a9e67ca301670 SHA-256: 6c1f713ff3fc76b091f4da3c58d5ef371d9e9af62e85ca14e6078561c215a222
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing or link farm attack. It contains numerous external links, including one pointing to 'traffine.ru', suggesting an attempt to redirect users to potentially malicious or ad-filled websites. The PDF structure and embedded content indicate it's designed to host and distribute these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffine.ru/aws?utm_term=armature+deforms+body PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4391611/normal_5f8f99792a5ce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378390/normal_5fa96c0e3b66c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450514/normal_5fad11381fa8b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458635/normal_5fb2953e309db.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410018/normal_5f995a139f1ca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470533/normal_5fb2b879a4339.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367004/normal_5f977aa48d899.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446784/normal_5fa83fb7d7bc8.pdfIn PDF document text
    • https://mizuzakulidux.weebly.com/uploads/1/3/4/4/134471721/sebowomusatu.pdfIn PDF document text
    • https://kirugivedipabaw.weebly.com/uploads/1/3/4/4/134464293/dagakanalinaw_zivezimobutib.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367635/normal_5f8a61ab52405.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414489/normal_5faea59f3bba6.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/6cce194e-2e5e-4cb0-b9c8-7a1d3690a169/domidixusagal.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://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c706.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC706 5252 bytes
SHA-256: 4e3d170fdc0db9d0ca89f92f25402cf0ca4087207d523152ea09943ec1c4360f
font_01_sfnt_off0000d8ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8CE 3720 bytes
SHA-256: d0c9e33916e9e64e42e31bcf0d345f6c2fcd41735b1a34df0119bd0eb1094281
font_02_sfnt_off0000e432.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE432 11120 bytes
SHA-256: a8d3b7d079350b6a3f77b670334441f868988c641e407d9941047d8b80f04253
font_03_sfnt_off00010a51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A51 16132 bytes
SHA-256: 1dc3e4c0df5ca4cee3a891f28fe896d6b16a951626fb4346f09e4ab97736c5fd

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