Malicious PDF — malware analysis report

Static analysis result for SHA-256 b82d86579f546b16…

MALICIOUS

PDF

41.5 KB Created: 2020-09-03 07:22:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 90ffe6a69dd12416280e0c8d7e217ffe SHA-1: dec6bcd1f1171249e66e08ba17796e98ef0553be SHA-256: b82d86579f546b161176c8c76f7673db6ac8270e8e7f5a76cb159cc760717f6f
128 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.me/wix?keyword=6+column+paper+template', is designed to lure users into clicking it, likely for a phishing or malware download attempt. The presence of a 'download button' heuristic further supports this attack pattern. No scripts were extracted, and the document body was heavily obfuscated, but the malicious link is the primary indicator of compromise.

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.me/wix?keyword=6+column+paper+template
    • https://cdn.shopify.com/s/files/1/0434/0989/9670/files/xumowikan.pdf
    • https://cdn.shopify.com/s/files/1/0436/4291/2926/files/fortune_telling_with_playing_cards.pdf
    • https://cdn.shopify.com/s/files/1/0431/3304/2839/files/22318020525.pdf
    • https://cdn.shopify.com/s/files/1/0431/8950/2110/files/champions_league_schedule.pdf
    • https://cdn.shopify.com/s/files/1/0429/6438/5951/files/chahunga_main_tujhe_hardam_video_3gp.pdf
    • https://cdn.shopify.com/s/files/1/0427/9474/6023/files/macromedia_flash_8.pdf
    • https://cdn.shopify.com/s/files/1/0431/8055/6452/files/89360026272.pdf
    • https://static.usrfiles.com/ugd/493135_189930bdf2364a0eab8279a32a080c3d.pdf
    • https://static.usrfiles.com/ugd/e5a943_70c57978501045e89914019273297c5e.pdf
    • https://static.usrfiles.com/ugd/d902bb_9a2c642800244f238714c45fcf088628.pdf
    • https://static.usrfiles.com/ugd/a76634_f47aff57cb9642ac9bf33ac21d8304d4.pdf
    • https://static.usrfiles.com/ugd/b8c837_60662604c94b423e92e0442c2ad2d8d0.pdf
    • https://cdn.shopify.com/s/files/1/0435/8258/7039/files/jukenutu.pdf
    • https://cdn.shopify.com/s/files/1/0441/3220/4696/files/gewet.pdf
    • https://cdn.shopify.com/s/files/1/0432/3278/8648/files/77246464209.pdf
    • https://cdn.shopify.com/s/files/1/0429/1588/9305/files/lower_extremity_arterial_doppler_monophasic_waveform.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zemeletitofugawekabol.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006350.bin
5a2ce7cf24cfff06451706a05255697f50f8686ebd15d6347f694776d398730d
pdf-font-stream PDF embedded font (sfnt) at offset 0x6350 4960 bytes
font_01_sfnt_off00007413.bin
8590385b2ae2d3ff2bf2ab156bdecdab36de4b9b7c1b1019451e6da9bf3dc9cb
pdf-font-stream PDF embedded font (sfnt) at offset 0x7413 10716 bytes