Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d0c709712b9eae7…

MALICIOUS

PDF

68.9 KB Created: 2020-11-24 09:23:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: d77e69df060d206ff02649a1cdd71c41 SHA-1: 12d9b7585918a5e665013ff225c8df998ea46d8c SHA-256: 6d0c709712b9eae72def607270ee9489fe9ba63d0258dd056839d7f2b6916a48
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://traffking.ru/aws?utm_term=paper+airplane+designs+templates PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4372376/normal_5fa400f5e9cb4.pdfIn PDF document text
    • https://girejegi.weebly.com/uploads/1/3/4/4/134490844/630afbcb0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491665/normal_5fad837973468.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423171/normal_5fa38b6282b02.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447276/normal_5f9f1640f31e8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460463/normal_5fab65b256b04.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370264/normal_5f8b528f9813b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/f2b413d0-f78d-4dc8-9e57-29533dba0aea/2541799986.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4f4ae88-dbb5-4fa8-9820-0bd04279e015/juvulaga.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/261bd742-d656-443b-8a8d-7e3e24b58a95/87136708640.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d44d9e00-061c-4703-91a8-1e34ebc99788/godewixejuvipufokifese.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a19a162-6bd5-4ab7-bc42-26c21ce41414/75929499890.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89ceb9d3-e879-412d-8128-e1822f8dc387/mitosibaxapemodisekuwer.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 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_off0000c618.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC618 4956 bytes
SHA-256: 2d405cdb6999d1544955f5b66bb35ea9e458bf05c6ee67e76aaed3d6bae24c71
font_01_sfnt_off0000d6ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6CA 9936 bytes
SHA-256: 16fc91a7ed181168de7c4e60021fd3f785f40f2b2e93c83fa2642828505097b1
font_02_sfnt_off0000f8ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8CE 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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