Malicious PDF — malware analysis report

Static analysis result for SHA-256 3356ecfc159a9348…

MALICIOUS

PDF

42.5 KB Created: 2020-08-14 01:44:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 930e4622ebfe35e93b79403e38c2f7ea SHA-1: a254232d786a1fa52f486c0b1b011f047a24dd08 SHA-256: 3356ecfc159a934819b635790e6df1d6ca8e4b6b528768a10ca68b03219a74fc
120 Risk Score

Malware Insights

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

The PDF file contains a mass external link farm, with a critical heuristic firing for a malicious redirector link. The primary malicious URL, 'https://ttraff.cc/pify?keyword=renaissance+periodization+template+free', is designed to redirect users to potentially harmful content. The document body, though heavily obfuscated, contains references to this URL and other Shopify links, suggesting a lure to download further content.

Heuristics 3

  • 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.
  • 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.cc/pify?keyword=renaissance+periodization+template+free
    • http://files.eyeofthehearttherapy.com/uploads/1/3/1/4/131453718/bujekevex.pdf
    • http://files.asliors.com/uploads/1/3/1/4/131437886/nukawisul-tatiximif-kufenor.pdf
    • http://files.skylercoleallen.com/uploads/1/3/0/8/130874559/vovuzebosuvinez.pdf
    • http://files.crystalcaillech.com/uploads/1/3/0/9/130969051/db38490f72065.pdf
    • http://files.muppetstoo.com/uploads/1/3/1/4/131438844/634a2ccf44df46.pdf
    • https://cdn.shopify.com/s/files/1/0433/3414/0056/files/firexujamesutemizilej.pdf
    • https://cdn.shopify.com/s/files/1/0430/8090/8951/files/60264751300.pdf
    • https://cdn.shopify.com/s/files/1/0430/4571/6129/files/kesetilusavunuxivag.pdf
    • https://cdn.shopify.com/s/files/1/0432/6794/8708/files/docs_lab_submissions.pdf
    • https://cdn.shopify.com/s/files/1/0429/3882/6908/files/alternative_dispute_resolution_bare_act.pdf
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/74498871063.pdf
    • https://cdn.shopify.com/s/files/1/0433/5022/9143/files/gunoz.pdf
    • https://cdn.shopify.com/s/files/1/0428/5943/0047/files/74296390958.pdf
    • https://cdn.shopify.com/s/files/1/0433/0710/6462/files/rebofijumimipegimivakon.pdf
    • https://cdn.shopify.com/s/files/1/0432/9983/1968/files/bipazo.pdf
    • https://cdn.shopify.com/s/files/1/0433/7080/7459/files/52171354893.pdf
    • https://cdn.shopify.com/s/files/1/0431/8999/3636/files/xaxasekob.pdf
    • https://cdn.shopify.com/s/files/1/0433/2378/5370/files/gekerurotuzageboma.pdf
    • https://cdn.shopify.com/s/files/1/0429/0894/2499/files/lenabe.pdf
    • https://cdn.shopify.com/s/files/1/0429/2070/6204/files/67876179827.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_off0000679b.bin
c7277975326ceef5dff477addd47c7650182b06c55767f1697dc110c89a26865
pdf-font-stream PDF embedded font (sfnt) at offset 0x679B 5360 bytes
font_01_sfnt_off000079c3.bin
4ea0b422eb449a14df067a5fa82f3048ac5c88950329fd303b7f9740f3cd3454
pdf-font-stream PDF embedded font (sfnt) at offset 0x79C3 10432 bytes