Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5470cc6aaab6d97…

MALICIOUS

PDF

81.2 KB Created: 2020-07-30 09:42:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 00c1110ed74f6622e915fff66b44e370 SHA-1: e1b7ce583d0ef4027bdc2594823895d6cf18d00e SHA-256: c5470cc6aaab6d9737b8fd4e6917ef93143f4440735ecac878534ea30d860ef2
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. This indicates the document is designed to trick users into visiting a malicious site. The PDF also contains a large number of external links, many hosted on 'cdn.shopify.com', suggesting a link farm or SEO poisoning attempt to drive traffic to malicious destinations. No scripts were extracted, but the presence of malicious redirector links is sufficient to infer the attack pattern.

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=antonio+gramsci+cultural+hegemony+pdf
    • http://files.intidharsaleh.com/uploads/1/3/1/6/131607544/2442b1c441bc1.pdf
    • http://files.dudleysafes.com/uploads/1/3/1/3/131398419/025eea.pdf
    • http://files.aldenmovesbk.com/uploads/1/3/2/3/132303406/tubofiwukoj-bazira-bowas.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/79265304831.pdf
    • https://cdn.shopify.com/s/files/1/0427/6027/4087/files/85261943809.pdf
    • https://cdn.shopify.com/s/files/1/0429/8289/9871/files/92463744169.pdf
    • https://cdn.shopify.com/s/files/1/0438/0390/2112/files/53245668232.pdf
    • https://cdn.shopify.com/s/files/1/0440/7810/4728/files/51734452688.pdf
    • https://cdn.shopify.com/s/files/1/0434/4417/5013/files/5608955934.pdf
    • https://cdn.shopify.com/s/files/1/0438/2323/5232/files/nisojab.pdf
    • https://cdn.shopify.com/s/files/1/0434/3015/0309/files/julumonizuzixuxajobo.pdf
    • https://cdn.shopify.com/s/files/1/0427/4746/1788/files/13908204292.pdf
    • https://cdn.shopify.com/s/files/1/0435/3831/7471/files/64860102178.pdf
    • https://cdn.shopify.com/s/files/1/0433/5114/6650/files/12419674188.pdf
    • https://cdn.shopify.com/s/files/1/0436/2718/4281/files/20204210784.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_off0000ff43.bin
86abe9dd1fd0403cbf9014c8937a07b34cd88f33019f013314d77634174ae6ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFF43 5540 bytes
font_01_sfnt_off000111f3.bin
0918c19bf03c9551a907948db16821693e43f042ab28fee86532a7ea58b5a0d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x111F3 11208 bytes

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