Malicious PDF — malware analysis report

Static analysis result for SHA-256 76ec29af0974b75b…

MALICIOUS

PDF

44.4 KB Created: 2020-08-12 01:04:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f1a5d7f7ae919cfd6ee7e79214bac9b3 SHA-1: 709f66b7192d9064217510af2aa309a73c077f7c SHA-256: 76ec29af0974b75b6561b04168ec3578f3dd6a8bbe5bec65b4e0f569f7d009d5
130 Risk Score

Malware Insights

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

The PDF file contains numerous links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.ru'. This redirector is likely used to obscure the final malicious destination. The presence of a 'download button' heuristic further supports a social engineering lure. No scripts were extracted, limiting the analysis of the payload, but the primary intent appears to be redirecting the user to malicious infrastructure.

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.
  • 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=pdf+to+word+software+online
    • http://files.sacredkinship.com/uploads/1/3/1/0/131071243/pukewufuw_kotofodaf.pdf
    • http://tudewegi.bristolplanthire.com/uploads/1/3/1/6/131606349/dbe69.pdf
    • http://files.dalmatiner-von-kalina.com/uploads/1/3/1/6/131637316/jibiroxogup-gikubapikowo-kojasaxejubo.pdf
    • http://files.michelemattinglybooks.com/uploads/1/3/1/4/131454286/46951.pdf
    • https://cdn.shopify.com/s/files/1/0431/3841/6801/files/nekiwegakegawikisupawiw.pdf
    • https://cdn.shopify.com/s/files/1/0433/5199/8623/files/93501721621.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zukukujumifuxutage.pdf
    • https://cdn.shopify.com/s/files/1/0431/1806/7876/files/46367293912.pdf
    • https://cdn.shopify.com/s/files/1/0430/8752/8103/files/bsc_agriculture_entrance_exam_book_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/9295/9642/files/sitimone.pdf
    • https://cdn.shopify.com/s/files/1/0429/2666/9987/files/94532822425.pdf
    • https://cdn.shopify.com/s/files/1/0449/4727/5931/files/skyrim_crash_fix_mod.pdf
    • https://cdn.shopify.com/s/files/1/0430/5797/1354/files/jemate.pdf
    • https://cdn.shopify.com/s/files/1/0435/0168/2843/files/bobinigoludizob.pdf
    • https://cdn.shopify.com/s/files/1/0433/0491/1006/files/blue_eyed_cass.pdf
    • https://cdn.shopify.com/s/files/1/0434/4299/5352/files/20943924410.pdf
    • https://cdn.shopify.com/s/files/1/0430/9195/1769/files/dixigewemub.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_off000063c4.bin
467b729cb7eada110eb0628372361cf054fed49c104d7e9e586d962edc3172eb
pdf-font-stream PDF embedded font (sfnt) at offset 0x63C4 4780 bytes
font_01_sfnt_off00007417.bin
d2befeb78c7588a45f9b1fe82616b6a4e0899788198c01a22ac4516486f71ff7
pdf-font-stream PDF embedded font (sfnt) at offset 0x7417 10084 bytes
font_02_sfnt_off000096a1.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0x96A1 4324 bytes