Malicious PDF — malware analysis report

Static analysis result for SHA-256 072f7d8bc8f14433…

MALICIOUS

PDF

34.2 KB Created: 2020-09-19 09:10:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 96931b0ef4bf632e2144c87a8eee3fde SHA-1: 5c58a27e2814825a0aaa793e68d7f17f8f71a874 SHA-256: 072f7d8bc8f144330f099e22cb6c3defa5eee4bb5b74107bef0ff0c53d706654
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm or SEO manipulation tactic. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.me/wix?keyword=scott+marine+power+parts'. This indicates an attempt to direct users to malicious infrastructure, likely for further exploitation or phishing. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis.

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.me/wix?keyword=scott+marine+power+parts
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/9148/5091/files/bomberman_classic_para_pc.pdf
    • https://cdn.shopify.com/s/files/1/0462/6943/1959/files/5892478927.pdf
    • https://cdn.shopify.com/s/files/1/0434/3509/8264/files/xapek.pdf
    • https://cdn.shopify.com/s/files/1/0434/3860/4450/files/kopagalobejabodowunonudoz.pdf
    • https://cdn.shopify.com/s/files/1/0431/5460/4198/files/6811614637.pdf
    • https://cdn.shopify.com/s/files/1/0428/8725/0087/files/cumberland_blues_guitar_chords.pdf
    • https://cdn.shopify.com/s/files/1/0438/3929/1554/files/asignatura_estatal_libro.pdf
    • https://cdn.shopify.com/s/files/1/0461/1355/4596/files/hvac_preventive_maintenance_checklist_template.pdf
    • https://cdn.shopify.com/s/files/1/0432/6054/3138/files/cdc_tuberculosis_infection_control_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0440/1594/3845/files/hitchhiker_s_guide_to_python_logging.pdf
    • https://cdn.shopify.com/s/files/1/0431/2724/2914/files/nevuwabenekem.pdf
    • https://cdn.shopify.com/s/files/1/0434/5112/1820/files/makopowijo.pdf
    • https://cdn.shopify.com/s/files/1/0438/0049/4241/files/63331302845.pdf
    • https://c2223782-da05-46a7-b675-528168bc430d.filesusr.com/ugd/90423f_13121bfcfa6948b6a5e1a9b9ba3ec7dc.pdf?index=true
    • https://3b80d420-2eda-4530-baac-da8f3cd684f5.filesusr.com/ugd/c8a981_cefb228768164aa3b81b4026ad47b965.pdf?index=true
    • 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_off000045f3.bin
899c54c8d1add63b8751236ca98316b4ed8c1a9d16269beb237c7c1b11cf542e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x45F3 5240 bytes
font_01_sfnt_off000057c0.bin
03e9042551d60bca5a432f576866b8b04304fb6f5b1fa0f5e59816ac4fa18fa5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57C0 10172 bytes

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