Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f0350a9368ef8e1…

MALICIOUS

PDF

47.3 KB Created: 2020-08-12 03:11:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6fa4d725ac88e39166e53382c0b31a42 SHA-1: 081db0885e66443604d535d91672155e9b182a3d SHA-256: 6f0350a9368ef8e1d670df9e0f4f98f5b0843a22e5ffc519535b216e804ba643
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'beneficial owner form pdf' and the malicious URL. This suggests a phishing or scam attempt where users are tricked into clicking the link, leading them 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.ru/pify?keyword=beneficial+owner+form+pdf
    • http://files.disastersisters.com/uploads/1/3/0/7/130775320/jesoforuwuxabej.pdf
    • http://files.travelwithsouthwind.com/uploads/1/3/2/7/132711983/koriwire.pdf
    • http://files.pickleball-germany.net/uploads/1/3/0/7/130775634/boxopamokufafame.pdf
    • http://files.chrystakay.com/uploads/1/3/0/7/130776526/5486958.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0436/7689/3334/files/sesivenezibanitewid.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wotedosepano.pdf
    • https://cdn.shopify.com/s/files/1/0434/6786/6278/files/bouree_tab.pdf
    • https://cdn.shopify.com/s/files/1/0429/1729/8329/files/50928374551.pdf
    • https://cdn.shopify.com/s/files/1/0431/2068/9306/files/fajenodojutamaruvizige.pdf
    • https://cdn.shopify.com/s/files/1/0432/9360/6046/files/sowovizolumepesujugored.pdf
    • https://cdn.shopify.com/s/files/1/0433/8080/1703/files/metal_forming_hosford_solution_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/9590/8761/files/goluze.pdf
    • https://cdn.shopify.com/s/files/1/0429/8804/4442/files/danukokosiku.pdf
    • https://cdn.shopify.com/s/files/1/0429/5586/6263/files/roll20_attack_macro.pdf
    • https://cdn.shopify.com/s/files/1/0437/8748/5342/files/49225030259.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ea2.bin
b3605b1d3cd5335089d88c10a2863adbb9d0c3335f5bff22b9c7bfcb15a5cd9a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EA2 4972 bytes
font_01_sfnt_off00007f6f.bin
e6303c4394425cb8f78f60145d931098f6034ae1f8bd2fb0c5fd0ac54332ef53		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F6F 10244 bytes
font_02_sfnt_off0000a25e.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA25E 4324 bytes

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