Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcb6482c194d3568…

MALICIOUS

PDF

47.5 KB Created: 2020-07-30 14:57:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ab0eeb3fd550f77c4154f5532324033b SHA-1: 4b279debdd417f73d707cb49b8d6e0e82276cdd6 SHA-256: fcb6482c194d3568e57b9ebe4f5c0a3690fce5bc9b1022170f8916fe1f85e4bc
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, which is characteristic of a link farm used for SEO manipulation or to host malicious content. One critical heuristic identified a link to a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a tool sometimes used to create malicious PDFs. The overall pattern suggests a phishing or scam attempt leveraging a link farm to obscure the malicious destination.

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=b.+d+chaurasia+anatomy+pdf
    • http://files.agelessfitness.us/uploads/1/3/0/9/130969545/lerakizokarenalanem.pdf
    • http://files.billiardsaustralia.com/uploads/1/3/2/7/132740371/xenozeru.pdf
    • http://files.mangialicious.com/uploads/1/3/1/0/131070327/fenotavumo_norivigoma_fumajowololej.pdf
    • http://files.mywonderfulstudents.com/uploads/1/3/1/3/131383319/rovobog_kifape.pdf
    • http://files.onpointgreatdanes.com/uploads/1/3/1/3/131384401/06492.pdf
    • https://cdn.shopify.com/s/files/1/0432/7469/8902/files/36612121855.pdf
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/5748119209.pdf
    • https://cdn.shopify.com/s/files/1/0431/0011/0999/files/12330892132.pdf
    • https://cdn.shopify.com/s/files/1/0430/0885/2117/files/figiz.pdf
    • https://cdn.shopify.com/s/files/1/0433/7709/8913/files/98542540810.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/51025654711.pdf
    • https://cdn.shopify.com/s/files/1/0431/5188/4449/files/bitilemebabebij.pdf
    • https://cdn.shopify.com/s/files/1/0434/5770/8193/files/xatube.pdf
    • https://cdn.shopify.com/s/files/1/0437/1991/7717/files/zixevopelaxo.pdf
    • https://cdn.shopify.com/s/files/1/0429/7211/9193/files/36048665744.pdf
    • https://cdn.shopify.com/s/files/1/0432/2590/7368/files/pepimemonatofud.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_off00007d45.bin
95587e1b2127926b0710f876d4ae0364bb21f9da6ab77e30ededbeca2a0aa5cb
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D45 5308 bytes
font_01_sfnt_off00008f27.bin
24a16b56cce7df86d172d956c65c13b3d7162485890d898c958bfbfc5fc933a4
pdf-font-stream PDF embedded font (sfnt) at offset 0x8F27 9804 bytes