Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7273a7720cd1db6…

MALICIOUS

PDF

41.5 KB Created: 2020-08-03 16:06:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: badf47411e707748b051385f2dbcbbb8 SHA-1: c48ffc0a5aab097a9248c307ab48e6ea2c6f72c5 SHA-256: a7273a7720cd1db66efeff82c47175598e924966c68c6dd92a460a4a2f3159f0
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, a common tactic for SEO poisoning and redirecting users to malicious sites. One prominent link, 'https://ttraff.com/pify?keyword=add+blank+page+to+pdf+itext', is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, reinforcing the lure. The presence of a link farm and a malicious redirector strongly suggests a phishing or scam 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.com/pify?keyword=add+blank+page+to+pdf+itext
    • http://nunikem.travelinforlove.com/uploads/1/3/0/8/130813866/gufososusel-bezukasewi-xixaj.pdf
    • http://files.myflamingheart.com/uploads/1/3/1/4/131453818/3806937.pdf
    • http://files.fccswimanddive.com/uploads/1/3/0/7/130776131/a917149571e8f2.pdf
    • http://files.thewatertank.co.uk/uploads/1/3/1/4/131453028/7419517.pdf
    • https://cdn.shopify.com/s/files/1/0435/8252/1503/files/23784948841.pdf
    • https://cdn.shopify.com/s/files/1/0430/6714/6397/files/33953150887.pdf
    • https://cdn.shopify.com/s/files/1/0428/0143/0695/files/gewane.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/70686619693.pdf
    • https://cdn.shopify.com/s/files/1/0430/3713/0914/files/4929855510.pdf
    • https://cdn.shopify.com/s/files/1/0437/8460/1758/files/75084335817.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bobidaxida.pdf
    • https://cdn.shopify.com/s/files/1/0427/3229/0215/files/8505799719.pdf
    • https://cdn.shopify.com/s/files/1/0434/1530/6405/files/27203287754.pdf
    • https://cdn.shopify.com/s/files/1/0429/8234/2815/files/57550721362.pdf
    • https://cdn.shopify.com/s/files/1/0438/0917/7762/files/lukiboxefekutekede.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_off00006404.bin
32a5082003427ec183d0f338ea2e408e5ce4eebf318d13d7a04f2f766c0b7a58		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6404 5196 bytes
font_01_sfnt_off000075d1.bin
163db3cd7574667c6f555b81e3f8b3d077bb6e62327ca8822bfc13fd5ac1e8d3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75D1 10212 bytes

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