Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0567790a3466453…

MALICIOUS

PDF

44.7 KB Created: 2020-08-12 18:38:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 08a43d1964e0144d22bc41d125fca479 SHA-1: c0e8cbc01e151729ff2ba85b5acd2f3013f66067 SHA-256: d0567790a346645368394a00a43ac2089d41e3748d6998828a32073f8a427ebb
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.ru/pify?keyword=borderline+personality+disorder+treatment+plan+pdf', is designed to redirect users to malicious infrastructure. The document also contains a large number of external PDF links, many pointing to Shopify domains, suggesting a link farm or SEO manipulation tactic to obscure the malicious redirector.

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.ru/pify?keyword=borderline+personality+disorder+treatment+plan+pdf
    • http://files.thaiairwayssupport.com/uploads/1/3/0/7/130740561/6711236.pdf
    • http://files.spiritfireshaman.com/uploads/1/3/0/7/130739470/81eea3dfd.pdf
    • http://files.sweetwoodhavanese.com/uploads/1/3/1/8/131856276/dazutabuzesun_miwemop_xalarewa_xuvagelil.pdf
    • http://files.pulaskihealthcarecenter.com/uploads/1/3/1/4/131406258/4fadc2ecaa596b2.pdf
    • https://cdn.shopify.com/s/files/1/0431/1059/6765/files/social_psychology_textbook_aronson.pdf
    • https://cdn.shopify.com/s/files/1/0433/7300/2906/files/sepse_neonatal_sbp.pdf
    • https://cdn.shopify.com/s/files/1/0433/9073/0391/files/63705888215.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fuxojusi.pdf
    • https://cdn.shopify.com/s/files/1/0432/3459/0888/files/purpose_driven_life_download_free.pdf
    • https://cdn.shopify.com/s/files/1/0428/4396/3548/files/17781834648.pdf
    • https://cdn.shopify.com/s/files/1/0438/6160/6565/files/38839233305.pdf
    • https://cdn.shopify.com/s/files/1/0430/0842/6147/files/mamiladux.pdf
    • https://cdn.shopify.com/s/files/1/0434/7668/0869/files/jigiduzavafuxodinedisumum.pdf
    • https://cdn.shopify.com/s/files/1/0431/4949/2384/files/nopuxanozakog.pdf
    • https://cdn.shopify.com/s/files/1/0433/8027/7406/files/55438156943.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/23535065851.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000071ea.bin
57a091c6e45c0bf0559c28ffe95989ab65e7e80f24c5a26a2f46600c5ef1f849		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71EA 5336 bytes
font_01_sfnt_off00008401.bin
85cdecec08ccbef8a5bbf77e9c8e829999215a03c179d644ab245c1a37fe6f64		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8401 9708 bytes

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