Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6336b973c7c492c…

MALICIOUS

PDF

44.9 KB Created: 2020-11-05 00:16:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 7c5adbd3217357be906828f4c67eec0e SHA-1: 9e32e0d11f56adac1a549277c8e3868c291e88d1 SHA-256: d6336b973c7c492c9ad4ef30cd1777b3aaeb5f9d27e41a4b8d971df351e9e37c
114 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to known malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The ML classifier also strongly flagged this PDF as malicious. The document body, though partially corrupted, contains a URL that matches the redirector. The presence of these links suggests an attempt to lure the user to a malicious site, likely for phishing or to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://ggtraff.ru/strik?keyword=local+mobile+small+engine+repair+near+me In PDF document text
    • https://cdn-cms.f-static.net/uploads/4386607/normal_5f9e4c8c73a98.pdfIn PDF document text
    • https://getedizexagan.weebly.com/uploads/1/3/0/7/130740146/55a7b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381344/normal_5f90b2c69cb16.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368979/normal_5f93f0f77a856.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373778/normal_5f9ad46024192.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/e32d56cb-218e-4e39-830d-d19db26c8aee/jedi_fallen_order_bogano_binog_mesa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d1d17003-2fb3-4dc8-8af3-f055f1686299/42641162527.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4a02944e-6eca-46bc-8f36-543083ddf1cc/6290131343.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/016057d5-3c8a-42ac-a355-1ee921b40603/launch_x431_pro_3.pdfIn PDF document text
    • https://s3.amazonaws.com/satedafadusizo/florida_everglades_food_web_diagram.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/295443ba-9949-45bd-a6ac-4f0a57b90be3/40385277326.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8556bfa-7f4a-4ea0-b6a7-878ad7ccd811/vubulolomorafifikixozeka.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_off00006fa2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FA2 5332 bytes
SHA-256: cd73c58c02ca8746a8141d700f4910e58690a2a8496185bea41d0f46eff18c40
font_01_sfnt_off000081ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81AD 10744 bytes
SHA-256: bdd3644e56270e5252828bddcbbec0d3958f393c8f8ac7953f142e2e903a5154

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