Malicious PDF — malware analysis report

Static analysis result for SHA-256 887636734d2ce8b2…

MALICIOUS

PDF

40.1 KB Created: 2020-08-09 22:51:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6dbaeecd7eddbc07a7f2e4707507b691 SHA-1: abdafbe63741b641cfba1fa9b8ecfdb0ba943a1a SHA-256: 887636734d2ce8b2701c1819b1c86d7a197ac4f4f1a39f14e2a2e971c1af1883
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one critical link pointing to a known malicious redirector at 'https://ttraff.cc/pify?keyword=marvel+characters+drawing+pdf'. This indicates a phishing or scam attempt designed to redirect users to malicious content. The document body, though heavily obfuscated, contains references to the redirector URL and other benign-looking PDF links hosted on Shopify, likely to lend an air of legitimacy. No scripts were extracted from this sample.

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=marvel+characters+drawing+pdf
    • http://files.staticcomputations.com/uploads/1/3/1/0/131070362/a5337ce00.pdf
    • http://files.cuppagusto.com/uploads/1/3/2/6/132683111/dekejaj.pdf
    • http://files.wallingtonanimalrescue.com/uploads/1/3/1/1/131164556/5388895.pdf
    • https://cdn.shopify.com/s/files/1/0430/8277/6729/files/xupuzutumixevidelaxenazos.pdf
    • https://cdn.shopify.com/s/files/1/0427/8288/4006/files/visuvafatule.pdf
    • https://cdn.shopify.com/s/files/1/0433/9240/1573/files/wolf_oven_manual.pdf
    • https://cdn.shopify.com/s/files/1/0427/8976/5276/files/robavapatukemekusoso.pdf
    • https://cdn.shopify.com/s/files/1/0431/0627/1394/files/payroll_management_system_database_project.pdf
    • https://cdn.shopify.com/s/files/1/0430/3159/3113/files/60253290034.pdf
    • https://cdn.shopify.com/s/files/1/0429/8250/6647/files/sokajozuriletububijomi.pdf
    • https://cdn.shopify.com/s/files/1/0432/5664/3739/files/55713192732.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/59854739703.pdf
    • https://cdn.shopify.com/s/files/1/0431/5385/0524/files/14733278361.pdf
    • https://cdn.shopify.com/s/files/1/0435/6915/2163/files/bodyweight_muscle_building_program.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_off00005f41.bin
a714f69e72b788601b8707f87c0298ebb0c1797b499b09aae8264bb167c48d1a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F41 5576 bytes
font_01_sfnt_off00007254.bin
97f9cf2c9ac858fb45b85bc12bee5b86f1a998c15a0f7a4b29ae221f0c856a5d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7254 9736 bytes

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