Malicious PDF — malware analysis report

Static analysis result for SHA-256 334cbcd3fd989354…

MALICIOUS

PDF

71.1 KB Created: 2020-11-25 02:01:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: d4d0460efd48c2ff5dbd2536864cbc07 SHA-1: 7832f27ea51fd675e28f4e72993679f61864fc4f SHA-256: 334cbcd3fd9893542f3cf05fd06bab1b1d17be36ca5c9f2ddd12a5061b902a4f
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'. This indicates the document's primary purpose is to redirect the user to a malicious site, likely for phishing or malware distribution. The ML classifier also strongly flagged this PDF as malicious.

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/strik?utm_term=gay+older+rich+man+and+younger+vulnerable+man%257C2ahukewjsvp3gnonnahwnk98khse2accq2-ccegqiabaa%2526oq In PDF document text
    • https://cdn-cms.f-static.net/uploads/4460706/normal_5fa33c1f1865b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368481/normal_5f9ce791d1235.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/300892a3-5b73-4c91-bf77-036c6dee1007/58526770149.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c349798-65dd-46a4-9b51-15321c993192/new_celebrity_oops.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02c19e34-b3d8-49f8-8b18-fee0ebc87c84/wacom_bamboo_fineline_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f19563b-03ab-426b-bd38-c49cbae17c94/runetasonutimubaf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f3fae76-0eb2-4cd9-93e8-1da1d718e275/30796454800.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/584d30c8-1b25-4e1d-a4e6-c3ae70a593c3/new_inside_english_grammar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2e91fae-01d0-49dc-bdc9-8cb62f07c27b/fubevalixidoxed.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19312c37-3883-49df-ba86-fd395448d70d/wuvexeburorut.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1901590c-64e6-425d-bfff-95cd5ea75fd3/raxuwomupilikixelo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d5b94f02-52c3-421a-8c31-87adfda8bb8c/xavit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/edf47d1b-8e09-4ba5-ada6-cdb253dfee4b/pizz_party_pickup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/741c5cb5-0104-4b42-9dc4-10a3f435b1a6/ludinexulezo.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_off0000d24c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD24C 6888 bytes
SHA-256: fcce6754395e0ec7e8f9117c10097f5da2a113c0103476cf8a2c17b1bafcc435
font_01_sfnt_off0000e9a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9A5 10892 bytes
SHA-256: 1982bf0b235409c64ac8ea917deebbce681c4e9cc8eae0cb463c8ffa44bd47fd

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