Malicious PDF — malware analysis report

Static analysis result for SHA-256 608ab546ff94793d…

MALICIOUS

PDF

60.4 KB Created: 2020-08-09 06:54:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 997afb3cf3ada785fdc8cc080849c909 SHA-1: 7b3db69a08194122fa8b0c40bf373d1e1f5bfc01 SHA-256: 608ab546ff94793dfab945dfde569319c5b5dec7f9bc5c195d3c8174a1cda1f9
154 Risk Score

Malware Insights

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

The PDF contains a lure promising free access to a Warhammer 40k codex, but the embedded link redirects to a malicious redirector. The document also contains a large number of links to other PDFs, likely for SEO manipulation or to host further malicious content. No scripts were extracted, but the presence of a malicious redirector and the link farm strongly indicate a phishing or scam attempt.

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.com/pify?keyword=warhammer+40k+8th+edition+codex+pdf+download+free
    • http://files.followthrumarketing.ca/uploads/1/3/1/3/131383864/wipemus_rivikavuridezip_mudilemiwoligeb.pdf
    • http://files.delsocialmedia.com/uploads/1/3/1/8/131856705/8ddc768d527.pdf
    • http://files.okanaganayurveda.com/uploads/1/3/1/8/131872273/9236958.pdf
    • http://files.lukeshobbies.com/uploads/1/3/2/7/132741352/ravorogegeru-kezasalaw-rapapul.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zosogorimojafi.pdf
    • https://cdn.shopify.com/s/files/1/0428/7329/0908/files/57840347720.pdf
    • https://cdn.shopify.com/s/files/1/0430/5122/1146/files/93812918256.pdf
    • https://cdn.shopify.com/s/files/1/0431/6938/2568/files/31844564107.pdf
    • https://cdn.shopify.com/s/files/1/0433/1352/8987/files/associer_des_entre_eux.pdf
    • https://cdn.shopify.com/s/files/1/0434/0174/0439/files/farmacologia_ansioliticos_e_hipnoticos.pdf
    • https://cdn.shopify.com/s/files/1/0436/0673/7053/files/solving_two_step_equations_with_fractions_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/18396470220.pdf
    • https://cdn.shopify.com/s/files/1/0433/9105/8083/files/24087359416.pdf
    • https://cdn.shopify.com/s/files/1/0427/9202/6271/files/t_shirt_cutting_pattern.pdf
    • https://cdn.shopify.com/s/files/1/0431/7849/2062/files/11375726464.pdf
    • https://cdn.shopify.com/s/files/1/0431/9897/2066/files/22073219905.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_off00009fbe.bin
e2e3008a010198f707513f7e1e6fb4bc3fbf71167752a6a25f24f0f0ca2352fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9FBE 5876 bytes
font_01_sfnt_off0000b3bf.bin
d72994553c90f26550386ad489923380953cda041a4de7d5c293edf091df0e0e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB3BF 15452 bytes

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