Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab1b679b61501ca1…

MALICIOUS

PDF

35.8 KB Created: 2020-07-31 20:10:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 407307cd8cda6848a67026d583a425d4 SHA-1: 24e808004b2529bdb549d1aedfac4500148cf771 SHA-256: ab1b679b61501ca15efa780d058506dc11854d54875d94328780a47cefc7b001
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.cc'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on Shopify. The document body, though partially corrupted, contains text related to 'Harley owners manual' and the wkhtmltopdf tool, suggesting a lure. The primary malicious IOC is the redirector URL, which likely leads to a phishing or malware delivery site.

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=harley+owners+manual
    • http://files.bonnybunting.com/uploads/1/3/2/6/132681207/c8d76a1fced53c.pdf
    • http://files.longshortasianequity.com/uploads/1/3/0/7/130740069/227652.pdf
    • http://files.cedartreeholistics.ca/uploads/1/3/1/4/131438329/fe781655a4.pdf
    • http://files.standupprojects.com/uploads/1/3/1/1/131163856/3c869aa.pdf
    • https://cdn.shopify.com/s/files/1/0432/4386/4228/files/22681096622.pdf
    • https://cdn.shopify.com/s/files/1/0438/4089/7174/files/boxawutosatajimo.pdf
    • https://cdn.shopify.com/s/files/1/0430/6989/8914/files/44759747141.pdf
    • https://cdn.shopify.com/s/files/1/0434/4764/8406/files/sejudolofo.pdf
    • https://cdn.shopify.com/s/files/1/0430/0174/1463/files/kapudimesujipajadol.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/24375498268.pdf
    • https://cdn.shopify.com/s/files/1/0433/5170/3706/files/gikofajijipoda.pdf
    • https://cdn.shopify.com/s/files/1/0431/1806/7876/files/merusirixiguloju.pdf
    • https://cdn.shopify.com/s/files/1/0433/8640/5022/files/35102130754.pdf
    • https://cdn.shopify.com/s/files/1/0430/9617/8849/files/mikat.pdf
    • https://cdn.shopify.com/s/files/1/0432/1860/0103/files/39815395277.pdf
    • https://cdn.shopify.com/s/files/1/0433/1231/6584/files/xiwapukotijigemugujafuxip.pdf
    • https://cdn.shopify.com/s/files/1/0431/5506/2938/files/suvigefufadubasamunuta.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_off00004f83.bin
294c35f04dbbc01b46cfe4da81366fc2a39e977672d46b7acb52af634a0b0147		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4F83 4984 bytes
font_01_sfnt_off00006073.bin
bb4225e2e87494e3b2496cf9e3a73ca9c3a4a778ab8333535735ca070b761e99		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6073 9964 bytes

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