Malicious PDF — malware analysis report

Static analysis result for SHA-256 00fc2b6d75dc366a…

MALICIOUS

PDF

40.0 KB Created: 2020-08-03 03:21:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3445d13cdc934ecff5520860076acd65 SHA-1: e03f549f93494d55bbad1905957ed423c351b209 SHA-256: 00fc2b6d75dc366a52027a1b8f283db85aab8d7ba023c91fc46b971d0287b800
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=taimanin+asagi+game'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many of which are hosted on Shopify. The ML classifier strongly indicated maliciousness. The document body, though heavily obfuscated, contains the primary malicious URL and several benign-looking Shopify URLs, suggesting a lure or distraction.

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=taimanin+asagi+game
    • http://files.seoulvibephangan.com/uploads/1/3/1/0/131071166/divadofi.pdf
    • http://files.serohijoslab.org/uploads/1/3/0/8/130814605/968d2d86369c53.pdf
    • http://files.myped15.com/uploads/1/3/1/4/131406510/rovura.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/4577/2698/files/ruud_furnace_parts.pdf
    • https://cdn.shopify.com/s/files/1/0434/6665/3858/files/42216035177.pdf
    • https://cdn.shopify.com/s/files/1/0438/0118/2369/files/rofusiligapobumubirumug.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mojarugalemidim.pdf
    • https://cdn.shopify.com/s/files/1/0431/5938/8320/files/xeduxegojojobemito.pdf
    • https://cdn.shopify.com/s/files/1/0434/1818/9980/files/mojisuzuxuvutawo.pdf
    • https://cdn.shopify.com/s/files/1/0431/1495/4908/files/60503803169.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/ranugebiwuzejivuzuf.pdf
    • https://cdn.shopify.com/s/files/1/0434/7379/7285/files/xekabexotagaleme.pdf
    • https://cdn.shopify.com/s/files/1/0434/0698/3318/files/nebexumuzegepofevud.pdf
    • https://cdn.shopify.com/s/files/1/0431/5843/8039/files/rusarazexupinuzeg.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_off00006096.bin
50da20bc75d9c7bda1a95d9eed0fef1a805e98fe18e27db6c0298a1e35eaab39
pdf-font-stream PDF embedded font (sfnt) at offset 0x6096 4828 bytes
font_01_sfnt_off000070f2.bin
fc781b6eb4dfa2c87e87dfd78436d82eba57c2dc7c108dc74ead2aff774ab8ba
pdf-font-stream PDF embedded font (sfnt) at offset 0x70F2 10176 bytes