Malicious PDF — malware analysis report

Static analysis result for SHA-256 b768b0c07f88021d…

MALICIOUS

PDF

56.8 KB Created: 2020-11-08 15:47:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 3095d105d564f1269961ffc4275c37d6 SHA-1: d547cd4a5935971faff869ee12ddda8c6551128d SHA-256: b768b0c07f88021d50e75663baff657def8f584be88bd40717a94d521fd6b3f8
154 Risk Score

Malware Insights

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

This PDF document functions as a link farm, directing users to numerous external websites, including a known malicious redirector at `https://gettraff.ru/aws?keyword=pathfinder+inquisitor+class+guide`. The presence of many PDF links, some pointing to potentially benign content and others to unknown destinations, suggests an attempt to obscure malicious activity or distribute a large number of lures. While no scripts were directly extracted, the PDF structure and embedded links are indicative of a phishing or redirection campaign.

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.
  • 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.
  • 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=pathfinder+inquisitor+class+guide In PDF document text
    • https://cdn-cms.f-static.net/uploads/4368218/normal_5f90741d40a2c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373008/normal_5f8899eecdcd9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379855/normal_5f90ce136fb3f.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/4867245.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408461/normal_5fa3b59190018.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371003/normal_5f8e5dd9e77b4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466673/normal_5fa43e04425c8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413454/normal_5f964b922f1e7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366676/normal_5f8747657dc2b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376619/normal_5f9fa87c3ca8a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426408/normal_5fa5c105a529f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384483/normal_5f9c41ef37cbc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://nenupewav.files.wordpress.com/2020/11/amcat_automata_fix_questions_with_answers.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009261.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9261 5292 bytes
SHA-256: 0b0925eb623465453c2037f098236525ad2ac8dc15ddaa168ae49ae192639079
font_01_sfnt_off0000a442.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA442 9964 bytes
SHA-256: 87d0109ac44f2b4b1d62af0e123573890537af0d4bb8016c24ac054ae669f0b4
font_02_sfnt_off0000c672.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC672 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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