Malicious PDF — malware analysis report

Static analysis result for SHA-256 25964ed9b76fb987…

MALICIOUS

PDF

45.7 KB Created: 2020-08-19 00:15:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 631ace6cc001c7af3b9b9951ded1012b SHA-1: 0800116502e51bd1e5d63b8ef8f6983d8d042152 SHA-256: 25964ed9b76fb9873a19a341533c6c19263f459055472821d473dfd27d0413a3
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=actual+evapotranspiration+pdf', which is flagged as malicious. The presence of a link farm suggests an attempt to generate traffic or distribute content through SEO manipulation, ultimately leading to the malicious redirector.

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=actual+evapotranspiration+pdf
    • http://files.chardoncommunityactionteam.org/uploads/1/3/1/3/131384018/pugotut-newifuniz.pdf
    • http://files.ladyteeth.com/uploads/1/3/1/4/131406811/labewexudejosiwuki.pdf
    • http://zavamos.brain2gain.com/uploads/1/3/1/3/131383483/9639575.pdf
    • https://cdn.shopify.com/s/files/1/0438/7930/1275/files/zufifojuk.pdf
    • https://cdn.shopify.com/s/files/1/0437/2230/9786/files/introduction_to_environmental_engineering_mackenzie_davis.pdf
    • https://cdn.shopify.com/s/files/1/0434/3804/7384/files/29503038262.pdf
    • https://cdn.shopify.com/s/files/1/0431/0204/4316/files/sulphuric_acid_98_msds.pdf
    • https://cdn.shopify.com/s/files/1/0449/5890/8584/files/wheel_bolt_pattern_guide.pdf
    • https://cdn.shopify.com/s/files/1/0429/5196/6873/files/78654233660.pdf
    • https://cdn.shopify.com/s/files/1/0430/4008/0021/files/38154798159.pdf
    • https://cdn.shopify.com/s/files/1/0432/2990/5058/files/besokakogerifaxesiveni.pdf
    • https://cdn.shopify.com/s/files/1/0432/3475/4728/files/boziku.pdf
    • https://cdn.shopify.com/s/files/1/0433/8463/5544/files/english_grammar_practice_exercises_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0430/3077/3913/files/62201864727.pdf
    • https://cdn.shopify.com/s/files/1/0447/4968/4885/files/aashiqui_2_full_movie_hd_filmywap.pdf
    • https://cdn.shopify.com/s/files/1/0437/5491/3950/files/fakodulepetebepodirutes.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_off000074f0.bin
601c0f8ccaa929334b614864b822f29803ffde91ca95f1ebdd222e8046446cee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74F0 5196 bytes
font_01_sfnt_off000086ab.bin
e81e369c2399bc242bbcb29c9a47440fb2ae325646f055d096254f1d311437b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86AB 10240 bytes

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