Malicious PDF — malware analysis report

Static analysis result for SHA-256 b30950a3e003fa4a…

MALICIOUS

PDF

42.1 KB Created: 2020-08-14 03:12:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a1ff1eea4ce706e460360a178c613d83 SHA-1: 9c5c86039fd100dc7cdda217a2b9f7163d02a988 SHA-256: b30950a3e003fa4af3878243e0473548b3b2d7750e2e0c57ad210e6572fb638c
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com', which is used in a lure related to 'asco guidelines advanced breast cancer'. The document body also contains this URL and a link to a Shopify domain, suggesting a phishing or redirection attempt. The presence of numerous external links, many hosted on Shopify, indicates a link farm strategy to obscure the ultimate destination.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.com/pify?keyword=asco+guidelines+advanced+breast+cancer
    • http://files.sunglassfilms.com/uploads/1/3/1/3/131398452/1897a4b83e.pdf
    • http://files.border-lands.com/uploads/1/3/0/7/130739265/4656687.pdf
    • http://files.rafkasfareet1953-56.com/uploads/1/3/1/6/131606397/9aca1f4cf6a20.pdf
    • https://cdn.shopify.com/s/files/1/0431/4185/7448/files/10443142640.pdf
    • https://cdn.shopify.com/s/files/1/0438/3296/7318/files/malokijebofedan.pdf
    • https://cdn.shopify.com/s/files/1/0431/0827/0244/files/75160472.pdf
    • https://cdn.shopify.com/s/files/1/0431/9769/4109/files/15930482441.pdf
    • https://cdn.shopify.com/s/files/1/0433/3551/6318/files/32453636525.pdf
    • https://cdn.shopify.com/s/files/1/0433/1307/0238/files/haloalkanes_and_haloarenes_class_12_important_questions.pdf
    • https://cdn.shopify.com/s/files/1/0430/8038/4674/files/99594757674.pdf
    • https://cdn.shopify.com/s/files/1/0436/4537/0518/files/fusionner_fichier_adobe.pdf
    • https://cdn.shopify.com/s/files/1/0430/8280/9508/files/pewor.pdf
    • https://cdn.shopify.com/s/files/1/0428/6241/1935/files/61052985639.pdf
    • https://cdn.shopify.com/s/files/1/0431/8006/4936/files/89916838174.pdf
    • https://cdn.shopify.com/s/files/1/0438/9391/5800/files/dexexakuk.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_off000065d1.bin
f698c7ff94ca7079442f5ea701f72b6bf3f7f624f061b145368ef4c2f53d384d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65D1 5296 bytes
font_01_sfnt_off000077dc.bin
917ee6b94da84aaab7bd06dc7a41560b889b3abf734ea95c59bb41f26821fcf4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77DC 10544 bytes

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