Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0de467939f209ef…

MALICIOUS

PDF

44.1 KB Created: 2020-08-25 03:30:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a8fe0799f393a7b10d01d338dd412cdf SHA-1: 0a8f44a0621f91bb59310086fc6fdb77a146f49a SHA-256: b0de467939f209efee988b14025cde92098170eb25978d471a3ef90ee5d1f715
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as information about developer options. The link leads to `https://ttraff.cc/pify?keyword=developer+options+apk+5.+1.+1`, which is a known malicious redirector. The document also hosts a large number of external PDF links, many pointing to Shopify domains, likely as part of an SEO spam campaign to improve search engine ranking for malicious content. No scripts were extracted, but the presence of the malicious redirector and the SEO link farm strongly suggest a phishing or malware distribution attempt.

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=developer+options+apk+5.+1.+1
    • http://bilore.yogasutrasouls.com/uploads/1/3/1/8/131856877/bb45df4a8.pdf
    • https://cdn.shopify.com/s/files/1/0434/0213/3671/files/83166559959.pdf
    • https://cdn.shopify.com/s/files/1/0430/6986/6133/files/degulivesawateg.pdf
    • https://cdn.shopify.com/s/files/1/0432/1532/3291/files/mijipaforika.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nomevorijodasulalo.pdf
    • https://cdn.shopify.com/s/files/1/0434/8212/0357/files/business_applications_of_computer.pdf
    • https://cdn.shopify.com/s/files/1/0433/5543/9263/files/76920539223.pdf
    • https://cdn.shopify.com/s/files/1/0428/7728/8611/files/papenima.pdf
    • https://cdn.shopify.com/s/files/1/0439/3818/5384/files/51469919403.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006286.bin
ec28ff3560943ecf817e39a15803810238713a471b18cc06b537de063b4c8317		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6286 4932 bytes
font_01_sfnt_off00007364.bin
9c7f5aa1f7e8c08f09dc9bddb46d11806b9b1f6b1f55d07425e1e1b084d87ebe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7364 10052 bytes
font_02_sfnt_off000095cc.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x95CC 4324 bytes

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