Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5cbac9ae6f9e2a7…

MALICIOUS

PDF

34.0 KB Created: 2020-08-05 04:39:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aa7eb6ad1331bea16f0fbdb78a01e7e2 SHA-1: c0883631ff729f3bb69dcda6c7abb1c48e8a2ca5 SHA-256: a5cbac9ae6f9e2a733bfe56d069b8aeed0e34652ae6f2be19c3c34d93877fec2
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious URL identified is https://ttraff.com/pify?keyword=tissot+prc+200+user+manual+pdf, which is likely used to redirect the user to a malicious site. The document body, though heavily obfuscated, contains references to the target URL and other benign-looking PDF links, suggesting a link farm or SEO poisoning tactic to disguise the malicious intent. No scripts were extracted, limiting the analysis of direct execution capabilities.

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.com/pify?keyword=tissot+prc+200+user+manual+pdf
    • http://files.al-anon-orangecountyny.org/uploads/1/3/0/7/130775375/seluxujomegig.pdf
    • http://files.acquisdata.com/uploads/1/3/0/7/130775746/davisefegedexivinale.pdf
    • http://files.bayswaterpwds.com/uploads/1/3/1/4/131452949/6525437.pdf
    • http://files.thepromoninjas.com/uploads/1/3/1/8/131856860/2240282.pdf
    • http://files.carondeletchurch.org/uploads/1/3/0/7/130739674/tapivixafetelud_dedosu_lufug_lizobupo.pdf
    • https://cdn.shopify.com/s/files/1/0431/5847/0816/files/words_words_words_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0431/8488/1825/files/mukupogibozajujubipavoben.pdf
    • https://cdn.shopify.com/s/files/1/0433/2634/1278/files/17852494833.pdf
    • https://cdn.shopify.com/s/files/1/0432/6578/6006/files/10629482264.pdf
    • https://cdn.shopify.com/s/files/1/0435/9490/7810/files/texas_holdem_no_limit.pdf
    • https://cdn.shopify.com/s/files/1/0432/6578/6006/files/90873413909.pdf
    • https://cdn.shopify.com/s/files/1/0431/6200/9760/files/27290304067.pdf
    • https://cdn.shopify.com/s/files/1/0436/2957/6352/files/dnd_3._5_books.pdf
    • https://cdn.shopify.com/s/files/1/0437/4301/9159/files/angelic_symbols.pdf
    • https://cdn.shopify.com/s/files/1/0431/3379/6509/files/95328235071.pdf
    • https://cdn.shopify.com/s/files/1/0437/5812/5207/files/91653683524.pdf
    • https://cdn.shopify.com/s/files/1/0437/3735/0293/files/62312713154.pdf
    • https://cdn.shopify.com/s/files/1/0430/8949/4177/files/78868510205.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_off0000474b.bin
c778d65a3db30b54b0b9218e5c6934922b052198ef6f867dec2d7b57231e490e
pdf-font-stream PDF embedded font (sfnt) at offset 0x474B 5524 bytes
font_01_sfnt_off000059f8.bin
983756a58befb246f95cd2945cebbd539b5e2fabecfe00253c10e78f05380844
pdf-font-stream PDF embedded font (sfnt) at offset 0x59F8 9680 bytes