Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ef2d643df33ca6e…

MALICIOUS

PDF

48.3 KB Created: 2020-08-11 08:17:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c7777e71c6d0c247af1be157dbd660e9 SHA-1: d0b2df51de9529178093aa3b4c420a321cd04702 SHA-256: 7ef2d643df33ca6e8cf740351eee238755415f5c0848ea934b4809260ca2f4c6
148 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as 'Deloitte aptitude test questions and answers pdf'. This link points to 'ttraff.ru', which is flagged as a malicious redirector. The document also includes a large number of links to Shopify domains, likely part of a link farm to improve SEO for malicious content. The presence of a 'download button' lure and a callback lure further supports a phishing or scamming intent.

Heuristics 5

  • 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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=deloitte+aptitude+test+questions+and+answers+pdf
    • http://files.christineleunens.com/uploads/1/3/1/3/131398195/vuxezakanu_belope.pdf
    • http://kefad.yourprojectupdates.com/uploads/1/3/0/8/130813747/lozup.pdf
    • http://files.artglassforumny.org/uploads/1/3/0/7/130740264/vizivitifazinamezi.pdf
    • https://cdn.shopify.com/s/files/1/0437/1070/9915/files/physics_lab_manual_answers.pdf
    • https://cdn.shopify.com/s/files/1/0431/4624/8358/files/95342646812.pdf
    • https://cdn.shopify.com/s/files/1/0429/8850/3203/files/kibanigufoluwuzeni.pdf
    • https://cdn.shopify.com/s/files/1/0431/7682/0890/files/32859735901.pdf
    • https://cdn.shopify.com/s/files/1/0431/3497/6149/files/94993131829.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/22271122494.pdf
    • https://cdn.shopify.com/s/files/1/0435/7426/3963/files/jivewokepapumonekup.pdf
    • https://cdn.shopify.com/s/files/1/0430/0413/3525/files/34866295388.pdf
    • https://cdn.shopify.com/s/files/1/0429/6205/9427/files/85997998940.pdf
    • https://cdn.shopify.com/s/files/1/0438/6874/9979/files/29094459447.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_off00007176.bin
fd257c77bb51d57ee6f8abf778d60198fcedf27253eb0f73e9fb8fa8bfe8bf7b
pdf-font-stream PDF embedded font (sfnt) at offset 0x7176 5136 bytes
font_01_sfnt_off00008303.bin
8ae6aa7c24d7301689c36f99c4994b6942882bff6c112b35a1e7b0493cc4071f
pdf-font-stream PDF embedded font (sfnt) at offset 0x8303 10356 bytes
font_02_sfnt_off0000a629.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0xA629 4324 bytes