Malicious PDF — malware analysis report

Static analysis result for SHA-256 002602e0a8e10233…

MALICIOUS

PDF

69.2 KB Created: 2020-11-19 05:44:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 7fe00ece5855c81d44a32a44533e86a2 SHA-1: d8d79f39151e22a39bdcb5ccf1d407ee52e63184 SHA-256: 002602e0a8e102332e024913eae0ded8b3c4870af43144be180943f9cc36bbea
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-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://trafftec.ru/strik?utm_term=ejercicios+matematicos+para+ni%25C3%25B1os+de PDF link annotation
    • https://zujododa.weebly.com/uploads/1/3/4/6/134652654/75000555.pdfIn PDF document text
    • https://zuzunoginulori.weebly.com/uploads/1/3/4/7/134764202/jubemefixereresa.pdfIn PDF document text
    • https://wedagibawarog.weebly.com/uploads/1/3/4/6/134680751/rejojijege-tixewudal.pdfIn PDF document text
    • https://peledinupuw.weebly.com/uploads/1/3/4/5/134508745/443252.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/1ef519a2-1ef9-4c1b-bb42-437a6ef1a3a5/79691031447.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f0086f5b-e15e-4ca8-a463-7d8a35d52659/1_call_away_lyrics.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/869200ab-78d7-4088-b06e-82654b044a63/135386196.pdfIn PDF document text
    • https://s3.amazonaws.com/xukonakefules/energy_storage_india.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f56f2da-25ca-4040-a9ac-dd1249c998f5/62570045175.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d0cf5e8-9638-420f-aa9a-9c3b5773be40/duzipopi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e5a0bb5-0158-4e15-8110-378560b0eb2b/11990370906.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19dc623d-0822-4035-b5b2-7cb43459f255/rujedimibajenezotidigixi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9fea4dcd-b1b3-4d3d-86a4-f9205b7eed61/vaduza.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ce8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE8E 5432 bytes
SHA-256: bc77dc3d2c8f84827b27e9f99be75ff9e2c8768224a21c459236229394b0e66c
font_01_sfnt_off0000e0ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0AD 11444 bytes
SHA-256: 039bb81dd0a83521e9a15496ee2990a8764128aef46fdb9068a11aae5915efa2

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