Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7f2ad7a683a6c6b…

MALICIOUS

PDF

53.1 KB Created: 2020-08-23 07:03:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 401faa2e5434b4a25d4ca1352d32ba59 SHA-1: 92d668b28113e91caf49913adace397673a1e578 SHA-256: c7f2ad7a683a6c6b41aef15476b78072640469d434411f833049fb3a8d73a346
128 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, but one critical link redirects to a known malicious domain (ttraff.ru). This suggests a link farm or SEO poisoning tactic to distribute malicious content. The document body, though heavily obfuscated, contains the URL https://ttraff.ru/pify?keyword=bali+budget+travel+guide, reinforcing the malicious redirector finding. The presence of numerous external links, including one to a potentially malicious redirector, indicates an attempt to drive traffic to malicious sites.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=bali+budget+travel+guide
    • http://kadezimuz.katarplatformu.com/uploads/1/3/0/8/130814328/a7c3e4796a14.pdf
    • https://cdn.shopify.com/s/files/1/0431/7023/4527/files/52905050213.pdf
    • https://cdn.shopify.com/s/files/1/0433/9580/9431/files/uiview_drawrect_clear_background.pdf
    • https://cdn.shopify.com/s/files/1/0431/9802/1793/files/westland_survival_mod_apk_offline.pdf
    • https://cdn.shopify.com/s/files/1/0429/3489/4755/files/75936190516.pdf
    • https://cdn.shopify.com/s/files/1/0431/3782/6973/files/baby_s_day_out_2.pdf
    • https://cdn.shopify.com/s/files/1/0428/1165/4307/files/eliseu_martins.pdf
    • https://cdn.shopify.com/s/files/1/0434/9699/7030/files/dozizuwobulanupelutufesev.pdf
    • https://cdn.shopify.com/s/files/1/0430/9703/0805/files/85467875731.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
stream_005_off0000ab11.bin
31e2478194d6d9cb1cd7cc621c0159d14ef30be992fe18298d72e48738bf04eb		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xAB11 18416 bytes
font_00_sfnt_off0000762f.bin
123298dc196203636d19b3e0f78a4c96dbd25baa803e9de066a1ff3d6c442d33		 pdf-font-stream PDF embedded font (sfnt) at offset 0x762F 5064 bytes
font_01_sfnt_off00008772.bin
113b6d501b5d3bab33919c526330f1cdfcf3dd9903157a9aa809c3553c9147af		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8772 10352 bytes

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