Malicious PDF — malware analysis report

Static analysis result for SHA-256 860892af354a941c…

MALICIOUS

PDF

37.4 KB Created: 2020-08-28 07:51:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 84a33b4cdc1748ec22fbdf3358c25b90 SHA-1: 2170b4ade7f3714b67630c9af97c8e0e5e1e32d5 SHA-256: 860892af354a941c0cd928841ebcff338a3bb7f07880176947c685911f716688
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains embedded links, one of which, 'https://ttraff.cc/pify?keyword=playboy+april+2002', is flagged as a malicious redirector. The document also contains a large number of external PDF links, suggesting a link farm or SEO manipulation tactic. The presence of these malicious links indicates an attempt to lure the user to harmful infrastructure, likely for phishing or malware distribution.

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=playboy+april+2002
    • http://files.shopwickedwine.com/uploads/1/3/1/8/131857916/2576340.pdf
    • http://files.kategater.com/uploads/1/3/1/3/131383747/tolagibakotake_tapuned_vajuzedeloso_lelimibijegi.pdf
    • http://joxonid.byptrampolines.com/uploads/1/3/1/3/131379730/6427354.pdf
    • http://talor.breakingruleswritingcompetitions.com/uploads/1/3/0/7/130739777/4253764.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/1806/7866/files/vertigo_exercises_epley_maneuver.pdf
    • https://cdn.shopify.com/s/files/1/0427/7387/2807/files/bogerewum.pdf
    • https://cdn.shopify.com/s/files/1/0428/2282/8198/files/35784024809.pdf
    • https://cdn.shopify.com/s/files/1/0439/0112/4760/files/83841018980.pdf
    • https://cdn.shopify.com/s/files/1/0434/0393/5911/files/joruvorejiwatasitunu.pdf
    • https://cdn.shopify.com/s/files/1/0434/1599/4529/files/poranawok.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nozawilod.pdf
    • https://cdn.shopify.com/s/files/1/0429/4744/4903/files/vuvonarudadosig.pdf
    • https://cdn.shopify.com/s/files/1/0437/8443/7922/files/citric_acid_production_by_aspergillus_niger.pdf
    • https://cdn.shopify.com/s/files/1/0429/1526/6713/files/nanajivozozapu.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_off0000527e.bin
85683d6d0fcf969e7bc691b7a4fb2ac7e7214d633251163bb7e2a900d6053e3c
pdf-font-stream PDF embedded font (sfnt) at offset 0x527E 5152 bytes
font_01_sfnt_off00006410.bin
8b92ea0b97a7f61f1e8d89d0da59cf63644698eba096ee69a1f1726affd74015
pdf-font-stream PDF embedded font (sfnt) at offset 0x6410 10852 bytes