Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca275672ae1379ab…

MALICIOUS

PDF

46.0 KB Created: 2020-08-08 14:57:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 065f6c0ab208b6c8608d2264a179bca9 SHA-1: 7a97ea3c3895787f5edd3473e704e5b22fb7924d SHA-256: ca275672ae1379ab79a53102b7b8e9543a4f31e5a10343b9f4486886416dc4f2
150 Risk Score

Malware Insights

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

The PDF file contains a malicious redirector link disguised as a "cheat codes of gta vice city pdf" lure. This link, https://ttraff.cc/pify?keyword=cheat+codes+of+gta+vice+city+pdf, points to known malicious infrastructure. The document also contains a large number of external PDF links, many hosted on Shopify, which is indicative of a link farm used for SEO poisoning or to obscure the final malicious destination. The ML classifier also flagged this PDF with high confidence.

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.cc/pify?keyword=cheat+codes+of+gta+vice+city+pdf
    • http://kavemu.alissamschmidtphotography.com/uploads/1/3/1/3/131398020/wanemapiw.pdf
    • http://zepelok.deepcreekassociation.com/uploads/1/3/0/7/130775403/jizizinutonen.pdf
    • http://files.ammoniteyarns.co.uk/uploads/1/3/1/3/131381640/841e566.pdf
    • http://files.bbartbyangelica.com/uploads/1/3/0/7/130738748/2131434.pdf
    • http://files.jsfarnsworth.net/uploads/1/3/0/8/130813448/409831.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/61259485886.pdf
    • https://cdn.shopify.com/s/files/1/0434/1989/3927/files/madonna_santa_baby.pdf
    • https://cdn.shopify.com/s/files/1/0435/4473/9999/files/in_vitro_carrageenan.pdf
    • https://cdn.shopify.com/s/files/1/0433/4311/8495/files/33707781859.pdf
    • https://cdn.shopify.com/s/files/1/0431/6885/8280/files/tinademawevimewu.pdf
    • https://cdn.shopify.com/s/files/1/0429/1470/9663/files/xakadid.pdf
    • https://cdn.shopify.com/s/files/1/0432/3577/0535/files/voicemeeter_banana_discord.pdf
    • https://cdn.shopify.com/s/files/1/0432/4494/5571/files/biwejopoj.pdf
    • https://cdn.shopify.com/s/files/1/0430/6465/6026/files/bing_rewards_search_bot.pdf
    • https://cdn.shopify.com/s/files/1/0438/3349/1613/files/pdf_file_size_reduce_below_2_mb.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wadilizesiwegokadokepub.pdf
    • https://cdn.shopify.com/s/files/1/0429/6887/5157/files/58771920097.pdf
    • https://cdn.shopify.com/s/files/1/0431/9975/8497/files/buzor.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_off00007599.bin
fa8ef88559925f9c48ab0236efe87461a495f1f52b3fd6e6334be77da4a781c1
pdf-font-stream PDF embedded font (sfnt) at offset 0x7599 5356 bytes
font_01_sfnt_off000087e2.bin
c234c46c8b3c5738160cc6f1009e91c322aefb8c778819efc47949de839c3ed6
pdf-font-stream PDF embedded font (sfnt) at offset 0x87E2 10284 bytes