Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d937eb0e92d93d1…

MALICIOUS

PDF

45.6 KB Created: 2020-11-02 20:10:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 690f2526707e29688c2fd314a1d8a3ef SHA-1: e7d03ff3b273de257d9fc9a455ac667b445b84b3 SHA-256: 8d937eb0e92d93d1cf09930ee271064ecb2012d282d9ccdc4af0b093918daba9
162 Risk Score

Malware Insights

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

This PDF document contains numerous embedded links, including one identified as a malicious redirector at 'https://gettraff.ru/aws?keyword=mrs+harrison+ford'. The document also exhibits characteristics of a link farm, with many external PDF links, suggesting an attempt to drive traffic to potentially malicious sites. The presence of urgency language further supports a phishing or scam-related attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://gettraff.ru/aws?keyword=mrs+harrison+ford In PDF document text
    • https://cdn-cms.f-static.net/uploads/4375700/normal_5f8a1ce048c9a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367927/normal_5f88fc00a1584.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/jovekus/grade_10_maths_functions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1684/5469/files/oak_forest_elementary.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/444a62b9-6a5a-4d9f-a047-1569564058f4/48016743453.pdfIn PDF document text
    • https://s3.amazonaws.com/donake/lifetime_fitness_south_austin_class_schedule.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9c4c69e-3e53-49d9-adab-eec38520356a/33057399658.pdfIn PDF document text
    • https://s3.amazonaws.com/fejififimaketo/21064364896.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b8b8279-8202-434a-975f-3f0ba2f35ed2/16968650877.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/zexoxik.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisi/clash_of_craft_minecraft_server.pdfIn PDF document text
    • https://s3.amazonaws.com/wibedubosateg/small_merge.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9aa595c1-1b83-4ab9-84b0-8a4fc62ca55e/77738156300.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7eb85c3-cdcc-4f95-ad63-c53afbfbf3af/dokujemipesonigapomi.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_off000072f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72F9 4968 bytes
SHA-256: 5328c622728fa2e6bbf1f105fe6abcac63d3a68b7500ccec59ff13eed22cb8e4
font_01_sfnt_off000083e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83E1 11412 bytes
SHA-256: c57395f3c23ba3de6ef62baeb65688f245434f321d098133115dd730af1a04aa

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