Malicious PDF — malware analysis report

Static analysis result for SHA-256 21b34f91626e07af…

MALICIOUS

PDF

177.7 KB Created: 2020-11-18 14:17:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: ab19d613c21641f6cd76816615182f23 SHA-1: 025b70f7afe1a137651683461cc5e55699582644 SHA-256: 21b34f91626e07af66c1323b4141750b2c826b17b441dbb4914bda4fd56d6b93
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'traffmen.ru'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the embedded URL is the primary indicator of malicious intent, likely serving as a lure for phishing or to download a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://traffmen.ru/aws?utm_term=tomodachi+life+babysitting+guide In PDF document text
    • https://cdn-cms.f-static.net/uploads/4417830/normal_5fad924e6c0cd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416789/normal_5f9b3dcac3609.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384484/normal_5f9c049518acd.pdfIn PDF document text
    • https://nidixinaxob.weebly.com/uploads/1/3/0/7/130739699/9206f502e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392853/normal_5f96466ad5fe8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/subud/pictionary_picture_cards.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ffcfe729-b60d-482f-ad00-e6928cd80b3b/8611838989.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05ed079b-ca03-45a3-b366-5eed2f682afb/bogitagusomag.pdfIn PDF document text
    • https://s3.amazonaws.com/likerajatob/17487124704.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/afb31aae-363b-463c-a873-33d3261a9f1a/mijezanafuxefapemuz.pdfIn PDF document text
    • https://s3.amazonaws.com/dozuga/xojunebufeji.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e3f87f1-441a-4a5c-aef7-5ba10fc382ec/jasavime.pdfIn PDF document text
    • https://s3.amazonaws.com/wibedubosateg/backseat_pilot.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_off00028065.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x28065 5528 bytes
SHA-256: 178920ed069ab12bf8d6f5d0a4ad3e7eb0e6e24541e6ad11786fb79dbd3d8deb
font_01_sfnt_off00029318.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x29318 11352 bytes
SHA-256: 3b3fc14eb46dd9a9937f6d49253f636c35490d064421a1ee7c3da956bdfc04ff

Open this report in the interactive analyzer, or submit your own file for analysis.