Malicious PDF — malware analysis report

Static analysis result for SHA-256 09074960c49c0e4d…

MALICIOUS

PDF

42.2 KB Created: 2020-08-03 23:38:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ac512e7babbec797ba5e776b55c6b1f3 SHA-1: e6a0694654383974ea2aefa715fc58030ffd4530 SHA-256: 09074960c49c0e4d624d50f14db1fa960a9eda6342c52e8412bb529c63b31b39
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to external PDF files, suggesting a link farm or SEO manipulation tactic. One critical heuristic identified a link to known malicious redirector infrastructure at 'https://ttraff.com/pify?keyword=arachide+d%25C3%25A9finition+pdf'. This indicates the document is designed to redirect users to potentially harmful websites, 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.com/pify?keyword=arachide+d%25C3%25A9finition+pdf
    • http://files.agapeministry.org/uploads/1/3/0/8/130874655/maxoxi-zibaxokeje-rolapuf.pdf
    • http://files.anstedwv.com/uploads/1/3/0/8/130814200/5647533.pdf
    • http://files.dceverestdanceteam.com/uploads/1/3/0/7/130739032/7681e7251d5.pdf
    • http://files.ohswolverineband.com/uploads/1/3/2/6/132681296/fojurapiwikaba.pdf
    • http://files.tautsaimnieks.online/uploads/1/3/2/7/132741743/9794291.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0440/8459/2805/files/japji_sahib_punjabi.pdf
    • https://cdn.shopify.com/s/files/1/0437/6264/7192/files/nexolef.pdf
    • https://cdn.shopify.com/s/files/1/0440/6591/5032/files/59403480188.pdf
    • https://cdn.shopify.com/s/files/1/0428/2561/3468/files/rinawutowu.pdf
    • https://cdn.shopify.com/s/files/1/0437/6998/7223/files/bimefupetapurotife.pdf
    • https://cdn.shopify.com/s/files/1/0430/3428/0090/files/73591682403.pdf
    • https://cdn.shopify.com/s/files/1/0431/0866/3457/files/69324379507.pdf
    • https://cdn.shopify.com/s/files/1/0429/9322/1783/files/gidutawidobepofaz.pdf
    • https://cdn.shopify.com/s/files/1/0433/4298/7422/files/pelabagemab.pdf
    • https://cdn.shopify.com/s/files/1/0438/7205/9547/files/lefopife.pdf
    • https://cdn.shopify.com/s/files/1/0431/0243/7527/files/47607183804.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_off00006322.bin
a654cec2007b7954db4c4978c907a8be96925629798472d4bb13e7bf218d1075
pdf-font-stream PDF embedded font (sfnt) at offset 0x6322 5164 bytes
font_01_sfnt_off0000746b.bin
d6c36ea323a5187dfdae4c3b65664e4547c81057e1f408ec8d2e1eee82e81445
pdf-font-stream PDF embedded font (sfnt) at offset 0x746B 12228 bytes