Malicious PDF — malware analysis report

Static analysis result for SHA-256 a066067f84650cab…

MALICIOUS

PDF

53.0 KB Created: 2020-08-29 15:24:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f2ef8a564d24079aec3d04aa8ff56872 SHA-1: a887dd048b30985e686099edcb18ddcfc0f61f92 SHA-256: a066067f84650cab4e951833c2f9be2f2f58aab56d09b4dc517bfb1135b19781
152 Risk Score

Malware Insights

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

The PDF contains a link farm and a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.club/wix?keyword=the+pillowman+full+script+pdf', which is also flagged as a malicious redirector. This suggests the PDF is designed to trick users into clicking the link, leading them to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.club/wix?keyword=the+pillowman+full+script+pdf
    • https://cdn.shopify.com/s/files/1/0427/6345/2583/files/16098473140.pdf
    • https://cdn.shopify.com/s/files/1/0433/2158/9913/files/kejutazotebipazasulaxiwiv.pdf
    • https://cdn.shopify.com/s/files/1/0430/1206/3391/files/48893036988.pdf
    • https://cdn.shopify.com/s/files/1/0434/2756/1628/files/14379720727.pdf
    • https://cdn.shopify.com/s/files/1/0430/2051/7537/files/37097571853.pdf
    • https://cdn.shopify.com/s/files/1/0431/3533/6616/files/ny_dmv_form_register_car.pdf
    • https://cdn.shopify.com/s/files/1/0434/0957/1990/files/11429338447.pdf
    • https://cdn.shopify.com/s/files/1/0430/0609/9605/files/kujutobijipopek.pdf
    • https://cdn.shopify.com/s/files/1/0427/6482/8839/files/neliwajobulelexeleji.pdf
    • https://cdn.shopify.com/s/files/1/0429/2886/5446/files/lidenatowuwofexesegowinuw.pdf
    • https://cdn.shopify.com/s/files/1/0444/4474/5894/files/fakitutuvokekesajada.pdf
    • https://cdn.shopify.com/s/files/1/0431/6335/3244/files/onn_remote_codes.pdf
    • https://cdn.shopify.com/s/files/1/0434/0065/9100/files/dungeons_and_dragons_character_sheet_editable_5e.pdf
    • https://static.usrfiles.com/ugd/b8c837_12dbbae6700946b2bd35f5b8641ff41c.pdf
    • https://static.usrfiles.com/ugd/80bfa9_190f02e0578d483484d4b9feb370c3cb.pdf
    • https://static.usrfiles.com/ugd/b8c837_ff6e6566936a440e85a3ba496a4781d1.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000846c.bin
47ae57f541f089cefc00e956acc4f5e1e60bca2a1a97d977b8ebdc4d3817c604		 pdf-font-stream PDF embedded font (sfnt) at offset 0x846C 3896 bytes
font_01_sfnt_off0000922e.bin
29a9210ca5fe8362bcaa55a961f66899ec97df5d3a248578ee28b21d93f16851		 pdf-font-stream PDF embedded font (sfnt) at offset 0x922E 5436 bytes
font_02_sfnt_off0000a495.bin
2e3546122d22a10b50b4a21d371c8c23e3469ffc114952675f3e9b0c5612459a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA495 10004 bytes

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