Malicious PDF — malware analysis report

Static analysis result for SHA-256 932712ae832cbfea…

MALICIOUS

PDF

42.2 KB Created: 2020-08-04 10:44:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: be2e317813be4117e73c8927800da611 SHA-1: e416f757357251382240b0e94efee4efe812bffd SHA-256: 932712ae832cbfeacb5b6b22dc635c4e9a38c9c4397e12dcffae0bbacd34eddf
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com, but one specific URL, 'https://ttraff.cc/pify?keyword=apprendre+%25C3%25A0+lire+l+heure+en+anglais+pdf', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains this same URL, suggesting the primary intent is to redirect the user to malicious infrastructure. The presence of numerous links and the malicious redirector indicate a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=apprendre+%25C3%25A0+lire+l+heure+en+anglais+pdf
    • http://files.westerauchrawcroft.com/uploads/1/3/0/7/130776208/0c1e32e32.pdf
    • http://files.mrsfargosfirstgrade.com/uploads/1/3/0/9/130969740/razukomeramine-guvipivabawivij-folezebesivaga-joxixutazot.pdf
    • http://bimigib.eastpacificmarine.com/uploads/1/3/0/7/130776728/20b62e6a9ad75e.pdf
    • https://cdn.shopify.com/s/files/1/0430/8588/9689/files/85559213153.pdf
    • https://cdn.shopify.com/s/files/1/0433/6739/9575/files/honda_generator_7000.pdf
    • https://cdn.shopify.com/s/files/1/0429/5471/9395/files/examples_of_assistive_technology_for_visually_impaired.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bobidaxida.pdf
    • https://cdn.shopify.com/s/files/1/0446/5822/9411/files/java_script_blogspot.pdf
    • https://cdn.shopify.com/s/files/1/0434/0835/9589/files/linabunokaw.pdf
    • https://cdn.shopify.com/s/files/1/0438/6209/8085/files/vorafetovelupolubupoja.pdf
    • https://cdn.shopify.com/s/files/1/0430/0675/4970/files/8326116840.pdf
    • https://cdn.shopify.com/s/files/1/0438/8693/6219/files/whirlpool_dryer_manual.pdf
    • https://cdn.shopify.com/s/files/1/0445/3220/3679/files/sim_city_for_macs.pdf
    • https://cdn.shopify.com/s/files/1/0430/4669/9165/files/11757677123.pdf
    • https://cdn.shopify.com/s/files/1/0438/5826/4229/files/whatsapp_spy_tus_descargas_es.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000061eb.bin
b1bb28ea86937dc97995a8b881af1eba191a5d2bf5cdb6c3efa0e68dfcba3d76
pdf-font-stream PDF embedded font (sfnt) at offset 0x61EB 5528 bytes
font_01_sfnt_off00007426.bin
e9b024b10702ea07b2775656c5b1ebfb2fd207ee5851652034123d86b17cabeb
pdf-font-stream PDF embedded font (sfnt) at offset 0x7426 11868 bytes