Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2a00259dedeb614…

MALICIOUS

PDF

63.3 KB Created: 2020-11-24 22:02:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: f4c6e2ba2d7270fd1bbe053bb71e3fbc SHA-1: 4427603e04461cf7d3f363f5893426682eb6392f SHA-256: e2a00259dedeb614389da5ea1a4bc1205425e082690d9060768dd87b4b7ddb40
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains numerous external links, including one pointing to 'traffnew.ru', disguised with a game-related term. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting an attempt to drive traffic to malicious sites. ClamAV detection as 'Pdf.Phishing.Trojan' further supports a malicious intent, likely for phishing 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://traffnew.ru/aws?utm_term=assassin%2527+s+creed+2+ost PDF link annotation
    • https://xoverepidagagit.weebly.com/uploads/1/3/4/4/134469055/moledosi.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/9d698032-1780-4eb2-8f83-69819b75e135/69014518030.pdfIn PDF document text
    • https://s3.amazonaws.com/befevifa/8029934126.pdfIn PDF document text
    • https://s3.amazonaws.com/nonabafat/thomas_calculus_12th_solutions_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/jazuravazaguz/68759888169.pdfIn PDF document text
    • https://s3.amazonaws.com/jovekus/bill_nye_the_science_guy_plants_video.pdfIn PDF document text
    • https://s3.amazonaws.com/tokafanawa/modelava.pdfIn PDF document text
    • https://s3.amazonaws.com/bulozor/god_and_philosophy_antony_flew.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fca4fb18-6f9b-4ad0-9930-c0414fd2942a/rinovajidujog.pdfIn PDF document text
    • https://s3.amazonaws.com/kumasala/calendar_template_ms_word_2018.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47a18b9f-2b8b-4419-b252-829d167c6fd7/manual_for_vtech_cs6949.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53ea3edf-1134-4a4a-af18-e890b50e5c05/torabajarakutoke.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_off0000bae3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBAE3 5056 bytes
SHA-256: f1031cf438cd45dd46ec9ff9838e3807fd6c2cf6820137fa7609c2908758527c
font_01_sfnt_off0000cc23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC23 10676 bytes
SHA-256: 57858d4e75858d71d68abe7a8f1ccdbbf5c458f67b2f2033a184ea6fa90b8aef

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