Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd9681f893061ae0…

MALICIOUS

PDF

45.1 KB Created: 2020-08-23 17:01:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 46db6a024bd688e87542908fa5b05bb1 SHA-1: 92b0470f6c07562e3a518370a0bf1cb3e83c39e0 SHA-256: fd9681f893061ae01ecb380b3ff25d621b7e3a8f197d374b937db8d856c5825e
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a large number of embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the redirector found in the heuristics. This suggests the document is designed to lead users to malicious infrastructure, likely for phishing or malware distribution.

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=script+fonts+free++for+mac
    • http://tazobosez.childrensauthorsnetwork.com/uploads/1/3/0/7/130739789/5806730.pdf
    • http://files.franciscreekranch.com/uploads/1/3/1/6/131606360/rimeta.pdf
    • https://cdn.shopify.com/s/files/1/0457/4121/1804/files/cube_roots_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0438/4020/9056/files/wodamedose.pdf
    • https://cdn.shopify.com/s/files/1/0430/6560/6301/files/cooking_training_rs3.pdf
    • https://cdn.shopify.com/s/files/1/0449/8921/8984/files/ralupegatejita.pdf
    • https://cdn.shopify.com/s/files/1/0431/1135/0439/files/hunter_x_hunter_episode_135.pdf
    • https://cdn.shopify.com/s/files/1/0432/1722/3840/files/54112443137.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fenajowogotuxukat.pdf
    • https://cdn.shopify.com/s/files/1/0432/1738/7682/files/26776940984.pdf
    • https://cdn.shopify.com/s/files/1/0438/5816/5925/files/46234927794.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/
    • https://cdn.shopify.com

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000072c9.bin
552b280dc132e90204cdf9dfb0df524c80ffbef1bb20077e411d9d883ac38515		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72C9 5232 bytes
font_01_sfnt_off00008475.bin
4287e9153ba034fa0f99c4fb65bf1f2cd73e737743df187c1f89b0050cfd5d36		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8475 10292 bytes

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