Malicious PDF — malware analysis report

Static analysis result for SHA-256 a135993e69e4206a…

MALICIOUS

PDF

45.4 KB Created: 2020-07-30 14:41:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8486456d87bba6d193ec3060a6512382 SHA-1: e8fb27aae154510d5f15f6d1a82d4240efb7ad96 SHA-256: a135993e69e4206ab728baf614643524f533509f361bfd72b6b671e88d2a1b2e
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it directs users to known malicious infrastructure. Additionally, PDF_SEO_LINK_FARM suggests the document is part of a link farm designed to manipulate search engine results. The embedded URL 'https://ttraff.cc/pify?keyword=carb+cycling+guide+pdf' is the primary indicator of malicious intent, likely serving as a lure to a more harmful destination.

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=carb+cycling+guide+pdf
    • http://files.mulvehillhomeinspections.com/uploads/1/3/0/7/130739991/151985.pdf
    • http://files.jeffmacauley.com/uploads/1/3/1/8/131856664/b61ec4c3c3857a.pdf
    • http://files.mtpaintersalliance.org/uploads/1/3/0/7/130738943/tusapixomomofaladeg.pdf
    • https://cdn.shopify
    • https://cdn.shopify.com/s/files/1/0439/0112/4760/files/37182716052.pdf
    • https://cdn.shopify.com/s/files/1/0431/5496/4637/files/tutinitaru.pdf
    • https://cdn.shopify.com/s/files/1/0433/5904/3749/files/giworubaxewur.pdf
    • https://cdn.shopify.com/s/files/1/0430/0177/4233/files/ferep.pdf
    • https://cdn.shopify.com/s/files/1/0431/1633/1172/files/wimuxakudiwo.pdf
    • https://cdn.shopify.com/s/files/1/0431/7046/3895/files/jatutalojunilafaju.pdf
    • https://cdn.shopify.com/s/files/1/0435/7508/3171/files/24885002872.pdf
    • https://cdn.shopify.com/s/files/1/0433/7867/1779/files/kapokol.pdf
    • https://cdn.shopify.com/s/files/1/0428/3770/4867/files/51198548577.pdf
    • https://cdn.shopify.com/s/files/1/0437/7287/0807/files/52121064773.pdf
    • https://cdn.shopify.com/s/files/1/0430/7920/5013/files/14013860803.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_off0000746e.bin
3709cf9c9ab6f912287244331a9307e27f3442c25e25d3d665faffe672ceeee2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x746E 5100 bytes
font_01_sfnt_off000085d6.bin
f2be42cd9da349bfe0e0a2cbf9749e271e714640612682de9330bf3f7a21275c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85D6 10280 bytes

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