Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0a6bd7e5fdb6ee3…

MALICIOUS

PDF

45.4 KB Created: 2020-08-19 12:47:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 50f638b0620a102984fb9fb08704c73b SHA-1: bc98d38199831bcc03e4adf275aa13f3d7c55932 SHA-256: f0a6bd7e5fdb6ee3be0cc24b4f2308a17cd6a75b95b72b3cc0d26fe7b81a5eb0
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to a book review and includes the URL 'https://ttraff.com/pify?keyword=primed+to+perform+book+review', which is flagged as malicious. The file also exhibits characteristics of a link farm, with numerous embedded links to PDF files, likely intended to obscure the malicious redirector. No scripts were extracted, but the primary attack vector appears to be social engineering via a deceptive link.

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=primed+to+perform+book+review
    • http://files.thesummiteauclaire.com/uploads/1/3/0/7/130739593/zazox-zigugigop-vatopuja-rudorefifun.pdf
    • http://files.refugieesetdeplacees.com/uploads/1/3/1/3/131382808/951c4b2e.pdf
    • http://files.ataraxiaphotography.com/uploads/1/3/1/4/131455883/jazozixure.pdf
    • https://cdn.shopify.com/s/files/1/0435/1361/0392/files/wapabaja.pdf
    • https://cdn.shopify.com/s/files/1/0432/7538/7043/files/cyclopedia_anatomicae.pdf
    • https://cdn.shopify.com/s/files/1/0433/5117/9416/files/tesowigifaz.pdf
    • https://cdn.shopify.com/s/files/1/0435/1829/6216/files/built_to_last_summary.pdf
    • https://cdn.shopify.com/s/files/1/0431/9969/2958/files/24941471089.pdf
    • https://cdn.shopify.com/s/files/1/0430/6075/6641/files/98166641345.pdf
    • https://cdn.shopify.com/s/files/1/0430/8012/2532/files/12041581360.pdf
    • https://cdn.shopify.com/s/files/1/0432/3187/1139/files/gunubataxenadiwif.pdf
    • https://cdn.shopify.com/s/files/1/0434/9352/3618/files/92824627847.pdf
    • https://cdn.shopify.com/s/files/1/0434/7881/0789/files/furuluxonudivigeduwamip.pdf
    • https://cdn.shopify.com/s/files/1/0452/5555/7282/files/55230180174.pdf
    • https://cdn.shopify.com/s/files/1/0434/4994/2176/files/bizosuwokefajawafopuv.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_off000074ca.bin
fd1da5b2de0339689cad3ac525bedaef8d87f6662fbaf3ac62b2f91da5e0a7ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74CA 5124 bytes
font_01_sfnt_off00008635.bin
a0640686095d61ac4dc2aa0c5fede636520802de7bfed88f0f24c96a1ef20a05		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8635 10216 bytes

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