Malicious PDF — malware analysis report

Static analysis result for SHA-256 094571998dbf62ef…

MALICIOUS

PDF

75.2 KB Created: 2020-11-26 00:47:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 1b3524c7d84259070a653dc8b25284aa SHA-1: b65aca14ed841b961b9949ed011cd18d1509a4ed SHA-256: 094571998dbf62efee0c35b5ed6b6d817d2c0b10bc170492a2db813dea5dd4cc
156 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including PDF_SEO_LINK_FARM and ML_NYX_PDF_MALICIOUS, indicating a high likelihood of malicious intent. The presence of numerous external links, one of which points to a suspicious domain (trafficel.ru), suggests an attempt to redirect users to malicious content or phishing sites. The ClamAV detection further supports the malicious classification.

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://trafficel.ru/123?utm_term=kamiak+high+school+rating PDF link annotation
    • https://sawajarenemobo.weebly.com/uploads/1/3/4/4/134494328/a35c4b731.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384821/normal_5f9af668eedfe.pdfIn PDF document text
    • https://dumaxenuwumav.weebly.com/uploads/1/3/3/9/133997891/336d247124.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472188/normal_5fa4d6b0ad26e.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/9b53ec72f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488822/normal_5fbaf90da2011.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/a6bdf78f-fe1a-495f-8c8d-93345079da35/83819169757.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc3739b9-f137-4608-8c8e-194588de4cd6/tomirepawipelugakatire.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a35490c4-2a0d-4d09-b1f9-6d5c6c148e60/92898380106.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/834131ac-ff69-4f1c-881e-49d5f2ec2a25/44496423711.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae0f4f8f-0af0-4c89-9f13-1f958ac3ddea/74025711930.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/487d644c-88d3-4911-b6ff-eac1bb95d1b5/sujiba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0abcc58b-5481-4ef2-821a-22a85a20aaee/cornelia_street_piano_sheet_music.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7ca1ec2-ae6d-452c-a45e-da247045d21d/22296450156.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f76da372-f0bd-49d0-9b97-3de8a1cb6b60/45426754800.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_off0000e933.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE933 5244 bytes
SHA-256: 99befa194c3160f52d40667766f4784f77bf83cbbf5a1f89efdf91807a59d43f
font_01_sfnt_off0000fae4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAE4 10856 bytes
SHA-256: 0d8b6843ea3804398903c49e6cecddc0929ca658fc2a2ceb9c727dd5b8bb427a

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