Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f3abc1057a90601…

MALICIOUS

PDF

79.9 KB Created: 2020-08-05 03:17:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 87b33e2469481a14931d5b9d6171415f SHA-1: 70be88e595df438f76042aa008fcab98246d28bb SHA-256: 1f3abc1057a9060102c43041937cc6c9c05c0a63e78cdc9c9e26b38fb6e5af49
120 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 external websites. One critical heuristic identified a link to a known malicious redirector, and another indicated a 'link farm' pattern. The document body, though heavily obfuscated, contains a URL that appears to be part of this link farm. The primary intent appears to be directing users to malicious or potentially unwanted content through a deceptive link structure.

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=bacchae+paul+woodruff+pdf
    • http://files.illinoistocht.com/uploads/1/3/2/6/132681992/aebf2a40b2fed.pdf
    • http://files.buy.climbstation.com/uploads/1/3/1/6/131636988/lajozom.pdf
    • http://files.ukinvestmentstamps.com/uploads/1/3/1/3/131380354/1a2722e1.pdf
    • http://files.dantemedema.com/uploads/1/3/0/7/130739155/420989.pdf
    • https://cdn.shopify.com/s/files/1/0431/9831/6707/files/53466512905.pdf
    • https://cdn.shopify.com/s/files/1/0434/0213/3671/files/kidunerizedonaboralatu.pdf
    • https://cdn.shopify.com/s/files/1/0430/5305/6149/files/fifanusariluva.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bafewemuwidizisaj.pdf
    • https://cdn.shopify.com/s/files/1/0433/0812/2270/files/92427754144.pdf
    • https://cdn.shopify.com/s/files/1/0432/0411/6637/files/84147977819.pdf
    • https://cdn.shopify.com/s/files/1/0432/8187/5112/files/ruloxevipedaxapirozedino.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/73470001672.pdf
    • https://cdn.shopify.com/s/files/1/0437/6618/6135/files/44164179181.pdf
    • https://cdn.shopify.com/s/files/1/0428/3714/7804/files/43250842190.pdf
    • https://cdn.shopify.com/s/files/1/0429/6838/3641/files/firilipejinupujubulujiri.pdf
    • https://cdn.shopify.com/s/files/1/0432/6457/3593/files/fusela.pdf
    • https://cdn.shopify.com/s/files/1/0435/5280/0929/files/jquery_add_style.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_off0000eedb.bin
742fa2ec01f44622d2b294c04d46940971e7729efe02c96291e1f2626d54a998		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEEDB 5204 bytes
font_01_sfnt_off0001009f.bin
b75c68e75e6f5611cbf78aa89add4e5724c8e359366c09fd90439851357d8b87		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1009F 18652 bytes

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