Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c430894251d993e…

MALICIOUS

PDF

46.3 KB Created: 2020-08-03 01:20:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3cc6dc8eb3d80f8365ad03d21db7631e SHA-1: 2a45f1f766ba28a114c199d196ec24cb6436d8d1 SHA-256: 1c430894251d993e1b089588cf769965aae7c38d51bce225885a3eff4cb662d1
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.cc/pify?keyword=hhgregg+corporate+office'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links to external PDFs hosted on platforms like Shopify and other domains. The document body, though heavily obfuscated, contains references to the malicious URL, suggesting an attempt to disguise the malicious intent. 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=hhgregg+corporate+office
    • http://files.mycdaclass-unit8.com/uploads/1/3/1/4/131453698/dekeganojenak_vuvibakexo_kopawajotis.pdf
    • http://kupubedu.jessicakinziehunterplatt.com/uploads/1/3/2/8/132815367/wesowevewi.pdf
    • http://files.pastorflater.com/uploads/1/3/0/9/130969061/8030602.pdf
    • http://files.vdspilates.com/uploads/1/3/0/7/130776131/narixaruzodi.pdf
    • https://cdn.shopify.com/s/files/1/0430/4578/1665/files/gegajuxovenew.pdf
    • https://cdn.shopify.com/s/files/1/0427/5427/7532/files/77134535914.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/53741046047.pdf
    • https://cdn.shopify.com/s/files/1/0437/4829/4807/files/56186527177.pdf
    • https://cdn.shopify.com/s/files/1/0434/5217/0392/files/742434427.pdf
    • https://cdn.shopify.com/s/files/1/0431/8062/1984/files/sejovinabusonimaxa.pdf
    • https://cdn.shopify.com/s/files/1/0430/6750/6849/files/tamosuboxobasamup.pdf
    • https://cdn.shopify.com/s/files/1/0430/8028/6372/files/25926791515.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gowavofopinesifaremoka.pdf
    • https://cdn.shopify.com/s/files/1/0433/9780/8285/files/woputapejasazewimal.pdf
    • https://cdn.shopify.com/s/files/1/0438/1786/1277/files/nenadetadam.pdf
    • https://cdn.shopify.com/s/files/1/0427/7790/3263/files/fabelubexalojuwizod.pdf
    • https://cdn.shopify.com/s/files/1/0428/5687/4151/files/wevasalipatexokoban.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_off000077b8.bin
4f90451c8ceb47fc45819d35330bc68d4dbaced921d4d598d72ce05dbcc6ebc5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77B8 5028 bytes
font_01_sfnt_off000088d9.bin
679b5b3bcb192206646335cc550cb31f28f0ac1115dd51fe0255114ef7295f40		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88D9 10456 bytes

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