Malicious PDF — malware analysis report

Static analysis result for SHA-256 529348a60975889e…

MALICIOUS

PDF

84.8 KB Created: 2020-11-29 21:03:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: bdc78a1bc8b3f8e9b1a370d8424a4dee SHA-1: 1f00ae7ce5ec1ec045caf32fec40dd8703a7b938 SHA-256: 529348a60975889e1ca2e345b4436081d0299a71d3f15de795cfba2e83af8e92
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, a common tactic for link farm or phishing schemes. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically identified as 'Pdf.Phishing.Trojan'. The presence of embedded URLs suggests the document is designed to redirect users to potentially harmful sites, likely for credential harvesting or malware distribution.

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://trafficel.ru/123?utm_term=why+england+slept+pdf PDF link annotation
    • https://kitedagipan.weebly.com/uploads/1/3/4/8/134892955/nifoxidoja-birezegejel-wipopusujojuwi.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/815b5d48-5878-40e6-a9ea-c64aaeeac6d6/vupugadewazojaganatoka.pdfIn PDF document text
    • https://s3.amazonaws.com/datarofapakil/3800736295.pdfIn PDF document text
    • https://s3.amazonaws.com/widofafane/babylon_guide_civ_5.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5cddda1d-daf6-414a-9c12-7c7fca6a2e96/78605674348.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa9693e9-d50c-4993-9350-f64e400dc9b8/19681455642.pdfIn PDF document text
    • https://s3.amazonaws.com/wamatasamegu/zexisakotugurosikamux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d66a9bfb-372a-4020-9b6a-fb381a432a31/menogimuval.pdfIn PDF document text
    • https://s3.amazonaws.com/xabalaru/podixulutidogurupuzilekik.pdfIn PDF document text
    • https://s3.amazonaws.com/labitajaxatufib/47201348519.pdfIn PDF document text
    • https://s3.amazonaws.com/remeranexe/37120366782.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_off00010ef2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EF2 5320 bytes
SHA-256: af34dacd581672a264cc147cff0fbb268ba5577e6de660196ea6ba44373c326a
font_01_sfnt_off0001212a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1212A 10912 bytes
SHA-256: 7c2e1038e5d1e5ae5856a976cc4f0ac59a0f960b3057acf78299b1ff69c429c8

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