Malicious PDF — malware analysis report

Static analysis result for SHA-256 007a3d6ed01b6c4b…

MALICIOUS

PDF

96.4 KB Created: 2020-12-25 22:20:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 9184e8a361022365a7969f74da22ec8f SHA-1: 98f4d82d7c127b820e47570681beca1675251afa SHA-256: 007a3d6ed01b6c4b1cc0639fd4cf049625b84ac9dfbea6d70c318339458e09b3
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 0.9997

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/strik?utm_term=real+drift+car+racing+game+free+download PDF link annotation
    • https://jiwepurojal.weebly.com/uploads/1/3/0/7/130775762/408cbd41f222.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375339/normal_5fcecbe820d2b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477864/normal_5fc9f7064c853.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375515/normal_5f963ccfe547d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380073/normal_5fd61730e261b.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/41901283-f9c8-4d5b-9428-91b3ebe65278/lewalogopadulisiwaxiw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da7f8534-90f3-4054-bb0e-e69c9233e7df/72717904606.pdfIn PDF document text
    • https://s3.amazonaws.com/fasudikek/67431345812.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea700f4d-1030-4c0c-876e-c56aaab88d41/tevefibovekan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3690ff78-ade1-415f-9150-69087e23aa8b/47217242468.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e29c91d8-2e44-485e-880e-187c9f370773/82637468834.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/779f8526-a695-419e-9af0-b78a6cdda384/xipizukatalepokajel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/14195767-c956-4032-b941-a1eb0f58ced9/dungeons_and_dragons_dice.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_off00013e50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13E50 5260 bytes
SHA-256: 23ad9edebb7fd700da05f6b2b01b7a0c90c927ee9f50d22e1ec4919a81fc6422
font_01_sfnt_off00015037.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15037 10688 bytes
SHA-256: b153d25808c7fa48d4a8c2a5f19468e5fee36ca5c8a1df51958defd0577c3016

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