Malicious PDF — malware analysis report

Static analysis result for SHA-256 940733d78983cc63…

MALICIOUS

PDF

46.5 KB Created: 2020-08-27 15:55:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2691ab8f8ff9f01c3fa2fcae9e6baad8 SHA-1: 0382457d71f50bb62e40e40af2b819ceb5ac581d SHA-256: 940733d78983cc639bb7070ea0d0f7694b64af7bbae38dac6a74047b8a29d12a
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF contains a direct link to a known malicious redirector, ttraff.ru, which is associated with a callback phishing lure. The document body, though heavily obfuscated, contains the phrase "Home phone number" and the malicious URL, reinforcing the callback phishing pretext. The presence of a large number of external PDF links suggests an attempt to manipulate search engine results or distribute content through a link farm, potentially to mask the malicious redirector.

Heuristics 4

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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.ru/pify?keyword=home+phone+number
    • http://pizanelad.frameworkfitnesstucson.com/uploads/1/3/0/8/130814328/bopemezazit.pdf
    • http://lotezoki.guideswithin.com/uploads/1/3/2/6/132683014/tulegawamabi.pdf
    • http://zejixusa.persiantechnicalanalyst.com/uploads/1/3/0/8/130813325/noluti-sifujageviw.pdf
    • http://xiwodi.senjistudios.net/uploads/1/3/1/4/131482916/kalozinuriweg.pdf
    • http://files.sai-deltamu.com/uploads/1/3/2/7/132712222/6314576.pdf
    • https://cdn.shopify.com/s/files/1/0431/7980/2782/files/que_es_la_musica_popular.pdf
    • https://cdn.shopify.com/s/files/1/0446/1314/0643/files/empathy_altruism_hypothesis.pdf
    • https://cdn.shopify.com/s/files/1/0429/6402/5493/files/55050217861.pdf
    • https://cdn.shopify.com/s/files/1/0464/7052/9192/files/job_hopper_resume_template.pdf
    • https://cdn.shopify.com/s/files/1/0437/4711/5157/files/10480285070.pdf
    • https://cdn.shopify.com/s/files/1/0433/2670/1718/files/natawalegubujivobi.pdf
    • https://cdn.shopify.com/s/files/1/0430/6305/0394/files/winatesoxa.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/ligumugazawebamupewav.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pekazojifedabefotekufof.pdf
    • https://cdn.shopify.com/s/files/1/0437/6798/8376/files/ravupefexafez.pdf
    • https://cdn.shopify.com/s/files/1/0464/6495/8616/files/jujalamiko.pdf
    • https://cdn.shopify.com/s/files/1/0433/9639/9269/files/metabolisme_protein_pada_unggas.pdf
    • https://cdn.shopify.com/s/files/1/0432/8760/9497/files/xafer.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d53.bin
04d65d7fe4ffc80626c3a248e02d0df2148b507ba645e9e3d19206b49b82e185		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D53 4496 bytes
font_01_sfnt_off00007c4d.bin
4541784efb6197b38a5299726eec5c386e227e177499d0fbf216ce8b4e4e95c4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C4D 10192 bytes
font_02_sfnt_off00009f26.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9F26 4324 bytes

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