Malicious PDF — malware analysis report

Static analysis result for SHA-256 07a8725721d1d7c7…

MALICIOUS

PDF

44.2 KB Created: 2020-08-03 11:31:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2f3a83a5a65f1ae9351e7b070c682edf SHA-1: 6e6e73a1d3d25f0b8da60245afa0dc77d7980728 SHA-256: 07a8725721d1d7c770720b934165664bcbc4350fe4880ccaeb899f73256efd40
154 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector infrastructure at 'ttraff.cc'. The document body, though heavily obfuscated, contains text related to 'acdsee ultimate 2020 manual pdf' and the malicious URL, suggesting a lure to trick users into downloading potentially harmful content. The ML classifier also strongly indicated maliciousness.

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/pify?keyword=acdsee+ultimate+2020+manual+pdf
    • http://files.independentlegions.com/uploads/1/3/1/4/131483201/1320535.pdf
    • http://files.millenniagraphics.ca/uploads/1/3/1/4/131407088/8589830.pdf
    • http://files.weberwaverlywatermainproject.org/uploads/1/3/0/8/130814043/zaboxir-rilef-wadogo.pdf
    • http://files.totalmastersswimming.com/uploads/1/3/1/1/131164202/5e381495c.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0438/6032/8608/files/7053833399.pdf
    • https://cdn.shopify.com/s/files/1/0430/1363/6259/files/vogovilaravireburop.pdf
    • https://cdn.shopify.com/s/files/1/0431/0705/7825/files/purubidejurupefedu.pdf
    • https://cdn.shopify.com/s/files/1/0438/0822/7490/files/merotapodidogiburo.pdf
    • https://cdn.shopify.com/s/files/1/0429/7352/8213/files/6764325767.pdf
    • https://cdn.shopify.com/s/files/1/0440/1784/4382/files/lemiworenenibavam.pdf
    • https://cdn.shopify.com/s/files/1/0437/2273/5765/files/monster_manual_v.pdf
    • https://cdn.shopify.com/s/files/1/0430/3260/8921/files/xewijirizi.pdf
    • https://cdn.shopify.com/s/files/1/0437/3705/5393/files/7107107579.pdf
    • https://cdn.shopify.com/s/files/1/0430/1701/1353/files/mijoximafizuxuturav.pdf
    • https://cdn.shopify.com/s/files/1/0432/7066/8453/files/totitudapoxotumo.pdf
    • https://cdn.shopify.com/s/files/1/0436/4333/8912/files/hydrology_and_hydraulic_systems_gupta.pdf
    • https://cdn.shopify.com/s/files/1/0431/4667/4336/files/wobiw.pdf
    • https://cdn.shopify.com/s/files/1/0433/7447/7464/files/59807470043.pdf
    • https://cdn.shopify.com/s/files/1/0429/1087/5815/files/php_parse_email.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_off00006e38.bin
5ae0549d664d180b2e29296d5c1b1dd59fa207800d9c2710952359f101767608		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E38 5468 bytes
font_01_sfnt_off000080c0.bin
e6dc24b4198b76fc7d91ac75b010bc6311856563108b83994672665afcd3ff7c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80C0 10304 bytes

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