Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f76b5241a90c42e…

MALICIOUS

PDF

38.8 KB Created: 2020-08-29 17:49:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 548f86fdc42786922b2612849d772bc1 SHA-1: cce677135efdfaaf95774a94a67b966679be4b76 SHA-256: 0f76b5241a90c42e1fb311f8b495e4fa0b82fcfa05fdde576dd6ef85c1cd4146
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to external PDF files hosted on Shopify. One of these links, 'https://ttraff.cc/wix?keyword=storm+king+s+thunder+free', is identified as a malicious redirector. This suggests the document is part of a link farm or SEO manipulation scheme designed to drive traffic to malicious infrastructure.

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://ttraff.cc/wix?keyword=storm+king+s+thunder+free
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/3556/4949/files/gipanuzapu.pdf
    • https://cdn.shopify.com/s/files/1/0439/0017/4504/files/putabebomawisivuwugaxi.pdf
    • https://cdn.shopify.com/s/files/1/0432/2033/6807/files/6406375373.pdf
    • https://cdn.shopify.com/s/files/1/0464/5791/3512/files/enumerate_the_unconformities_of_sedimentary_rocks.pdf
    • https://cdn.shopify.com/s/files/1/0435/7950/6847/files/31640657590.pdf
    • https://cdn.shopify.com/s/files/1/0431/6374/6465/files/nidefedifodimirugowo.pdf
    • https://cdn.shopify.com/s/files/1/0432/9573/5976/files/date_sheet_hpu_1st_sem_2018.pdf
    • https://cdn.shopify.com/s/files/1/0434/4227/4471/files/chemistry_notes_for_class_12_chapter_1.pdf
    • https://cdn.shopify.com/s/files/1/0437/4924/5079/files/combine_files_mac.pdf
    • https://cdn.shopify.com/s/files/1/0454/7044/9816/files/adidas_yeezy_boost_350_v2_size_guide.pdf
    • https://cdn.shopify.com/s/files/1/0440/6607/8870/files/acca_f2_past_papers_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0432/8184/2341/files/depifekewusukatabija.pdf
    • https://cdn.shopify.com/s/files/1/0431/8127/7345/files/fedafaselawape.pdf
    • https://cdn.shopify.com/s/files/1/0440/7649/9096/files/xirumupexexatadizora.pdf
    • https://static.usrfiles.com/ugd/b8c837_acba72f8c18149d89a5f6b0bc257f69b.pdf
    • https://static.usrfiles.com/ugd/b8c837_7fa031943cc14e4887eb4feb4f9d60d0.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000059f8.bin
61c45a397d45c129057e93c81482c74ec2a5a328d901007bd270e9c4d8bed9b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59F8 5248 bytes
font_01_sfnt_off00006ba0.bin
8cf2b036888480085cf395500369c5d10d6f094f8bdba6d1741e1296a56e55fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BA0 10288 bytes

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