Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6ab2e7204cddfdd…

MALICIOUS

PDF

113.1 KB Created: 2020-08-10 15:04:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 942b47aa46eadb8efb696a1dbab749f1 SHA-1: 6dc50737ce777e09b30567b01f19dae93f61f2c7 SHA-256: e6ab2e7204cddfdd75001c47f9cf6b6ff20d50f9648c53797cfc6ed1fa3b37d6
120 Risk Score

Malware Insights

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

The PDF contains a link to a redirector service (ttraff.cc) which is flagged as malicious. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The PDF also exhibits characteristics of a link farm, likely for SEO poisoning to attract victims. No scripts were extracted, but the presence of a malicious redirector indicates a phishing or malware delivery attempt.

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=basic+russian+grammar+pdf
    • http://files.stephenknighttattoo.com/uploads/1/3/1/4/131452836/1fc48a.pdf
    • http://files.krecklaugermanshorthairs.com/uploads/1/3/0/9/130968993/ripev_vodikamutas_nukugiradegoni_fatefifoso.pdf
    • http://jafad.urbanbookcircle.com/uploads/1/3/2/6/132695569/wigemomavepefos.pdf
    • https://cdn.shopify.com/s/files/1/0433/7706/6145/files/foreign_literature_about_absenteeism_in_the_philippines.pdf
    • https://cdn.shopify.com/s/files/1/0427/6387/8566/files/leduwoxugorepebif.pdf
    • https://cdn.shopify.com/s/files/1/0430/6858/8194/files/86437908249.pdf
    • https://cdn.shopify.com/s/files/1/0430/6200/1825/files/27423115952.pdf
    • https://cdn.shopify.com/s/files/1/0437/2129/3974/files/vocabulaire_des_affaires_en_anglais.pdf
    • https://cdn.shopify.com/s/files/1/0433/0881/0398/files/tesixugitavujifevimepol.pdf
    • https://cdn.shopify.com/s/files/1/0428/4016/2467/files/28046827229.pdf
    • https://cdn.shopify.com/s/files/1/0429/9161/6153/files/ripemusupox.pdf
    • https://cdn.shopify.com/s/files/1/0427/8855/2870/files/suffix_ment_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0438/0501/6226/files/61359775064.pdf
    • https://cdn.shopify.com/s/files/1/0431/5011/4978/files/50898856354.pdf
    • https://cdn.shopify.com/s/files/1/0430/0472/3349/files/58739313176.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000148f2.bin
c4efde54662123a6b56880b2adc735376e7e785f78fd0c6d97965235c9411bed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x148F2 5492 bytes
font_01_sfnt_off00015b82.bin
292b10cfb88f8cea56093c06e5b444da052441267a11f62a32ee8374c15c6ce9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15B82 18152 bytes
font_02_sfnt_off000191fe.bin
78c46642af9058ab13d818f211516510af4705d286a3fba660ec84c7142ad882		 pdf-font-stream PDF embedded font (sfnt) at offset 0x191FE 16448 bytes
font_03_sfnt_off0001a892.bin
e2f78b85e49ed59e1beebc5d9770a651615a41179fd018c0c28b8a070172e828		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1A892 3488 bytes

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