Malicious PDF — malware analysis report

Static analysis result for SHA-256 b4cdb390820158e8…

MALICIOUS

PDF

43.7 KB Created: 2020-08-26 14:24:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 86678e99da8f695e1031122e34befc6b SHA-1: 977b0481b21e10d0836a66fa1616751c7a482a76 SHA-256: b4cdb390820158e83e94d8087933da4283a1aefba57e8e45d7694a579826c1cf
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, directing users to 'https://ttraff.cc/pify'. Additionally, it exhibits characteristics of a link farm, embedding numerous external PDF links, with the primary one being 'https://cdn.shopify.com/s/files/1/0431/7629/6605/files/redajinujojenujijojasekog.pdf'. The document body, though heavily obfuscated, also contains the malicious redirector URL and several other PDF links, suggesting a lure to external content that likely leads to further malicious activity.

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=a+moneta+tandil+hor%25C3%25A1rios+mundiais
    • http://poziwufo.stribbledistrict.com/uploads/1/3/0/8/130813835/tokawedogizo_rupul_ragosor.pdf
    • http://dowov.amandagretschot.com/uploads/1/3/0/7/130739845/5896801.pdf
    • http://files.militarypsych.org/uploads/1/3/1/3/131384025/pudaguzapu.pdf
    • http://fetixilus.embodylifeyoga.com/uploads/1/3/0/9/130969690/b898176f5b8.pdf
    • http://files.gnowangerupcrc.net/uploads/1/3/1/4/131437236/xovisinusudotudoja.pdf
    • https://cdn.shopify.com/s/files/1/0431/7629/6605/files/redajinujojenujijojasekog.pdf
    • https://cdn.shopify.com/s/files/1/0436/0706/4734/files/astro_a40_mixamp_pro_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/3215/8116/files/vegipajaxomewafube.pdf
    • https://cdn.shopify.com/s/files/1/0429/8611/1137/files/abstract_internship_report_sample_malaysia.pdf
    • https://cdn.shopify.com/s/files/1/0427/4431/6070/files/binary_to_hexadecimal_conversion_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0439/4595/1400/files/50_50_partnership_agreement_template.pdf
    • https://cdn.shopify.com/s/files/1/0432/2931/5229/files/autobiography_books_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0436/0926/0190/files/sidulivi.pdf
    • https://cdn.shopify.com/s/files/1/0431/2698/0765/files/adverbs_in_english_exercises.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_off00006934.bin
7e2293dced3e54f7c152ce317936c1c7def614fcf3c4582c69ed01709d97fb53		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6934 5288 bytes
font_01_sfnt_off00007a62.bin
797d7028d2e73e2d06434f58bab9487d991af47c2f920d874d343a8be7cd7f66		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A62 12476 bytes

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