Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5111110fc67699a…

MALICIOUS

PDF

67.8 KB Created: 2020-11-09 23:21:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 853789de702e965ceeea95bb4d09c694 SHA-1: 1f891289d4d72e4e8b233150128ec7dde842c8a5 SHA-256: e5111110fc67699a17095946bc4fce890aabff1aa2baeafebf17a3313c361f14
186 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 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
  • 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.
  • 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://traffking.ru/123?keyword=lifecam+vx+3000+driver+win+10 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4383446/normal_5f8ce905b09e6.pdfIn PDF document text
    • https://xuwazoleludike.weebly.com/uploads/1/3/4/3/134325396/bf21fc39.pdfIn PDF document text
    • https://xemivigezeb.weebly.com/uploads/1/3/4/4/134481563/58a3c.pdfIn PDF document text
    • https://wogivanozo.weebly.com/uploads/1/3/4/5/134586267/7945529.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365591/normal_5f86f875c8dce.pdfIn PDF document text
    • https://kusanogiwaxug.weebly.com/uploads/1/3/0/8/130873987/2164066.pdfIn PDF document text
    • https://zumutunamoja.weebly.com/uploads/1/3/4/5/134588160/fageretenapeno-rolasob-nokewufeweku-wigome.pdfIn PDF document text
    • https://setivegubuwo.weebly.com/uploads/1/3/4/4/134446573/3ea03.pdfIn PDF document text
    • https://fodewifejala.weebly.com/uploads/1/3/4/4/134491976/7115606.pdfIn PDF document text
    • https://zoveponezewuda.weebly.com/uploads/1/3/0/7/130738822/4040610.pdfIn PDF document text
    • https://gewusepisegetu.weebly.com/uploads/1/3/4/4/134492884/depuwesoramadejijo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379043/normal_5f8dc30c3a931.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428033/normal_5f9a3c7b821c9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370080/normal_5f88183ca91f3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wuniku/20896222213.pdfIn PDF document text
    • https://s3.amazonaws.com/pewebopufupe/faditobofa.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ca6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA6D 5476 bytes
SHA-256: efa6eb7276c9cab2089b092d77c294120b9460f939af4ef2d0a672ec4eda6c8f
font_01_sfnt_off0000dd1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD1E 11664 bytes
SHA-256: f3373afd4e2e8a0b0314aa56616d79270ed9974ee85518ee6745b6a76dffb9ef

Open this report in the interactive analyzer, or submit your own file for analysis.