Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d8c2ad332c768e2…

MALICIOUS

PDF

43.5 KB Created: 2020-09-05 04:20:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f5bebc65457b99e4dc90c6d37084f658 SHA-1: 00788c5bc54fa5c6e0626322e3558f81926061d6 SHA-256: 0d8c2ad332c768e2bb0be19c6f5a6eb2362129a35f91998ee20ba9fa8d6179bb
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains a link farm and a specific malicious redirector URL, disguised with a lure for 'Cain and Abel Windows 7 FileHippo'. The ML classifier strongly flagged this PDF as malicious, and the presence of a download button lure and password archive lure suggests a multi-stage attack. The primary malicious URL is ttraff.club, which is known to host redirectors.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=cain+and+abel++windows+7+filehippo
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/5385/0528/files/baxupulef.pdf
    • https://cdn.shopify.com/s/files/1/0432/6939/0500/files/87995998873.pdf
    • https://cdn.shopify.com/s/files/1/0437/7827/7525/files/betterdiscord_no_delete_messages.pdf
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/alp_psychological_aptitude_test.pdf
    • https://cdn.shopify.com/s/files/1/0427/7331/5740/files/who_oral_health_assessment_form_2020.pdf
    • https://cdn.shopify.com/s/files/1/0436/0234/6148/files/33048709322.pdf
    • https://cdn.shopify.com/s/files/1/0431/2032/8864/files/pakujuginuvonigipozatenoz.pdf
    • https://cdn.shopify.com/s/files/1/0434/4384/7328/files/assembler_directives_8086.pdf
    • https://cdn.shopify.com/s/files/1/0430/9899/6889/files/79685735013.pdf
    • https://cdn.shopify.com/s/files/1/0436/6221/3270/files/blackout_poetry_directions.pdf
    • https://cdn.shopify.com/s/files/1/0439/4015/1464/files/basic_digital_electronics_books.pdf
    • https://cdn.shopify.com/s/files/1/0440/8855/7718/files/sample_swot_analysis_report.pdf
    • https://cdn.shopify.com/s/files/1/0433/3692/5342/files/9480725335.pdf
    • https://cdn.shopify.com/s/files/1/0434/4968/0028/files/the_world_in_2020_economist_free.pdf
    • https://cdn.shopify.com/s/files/1/0427/7446/2631/files/wadem.pdf
    • https://cdn.shopify.com/s/files/1/0438/8909/8907/files/sapeduxonezikibakatijepap.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b3c.bin
54c785c80002c46a9405e02ef6245969bf3114d3cffeb834923ade418240826c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B3C 5248 bytes
font_01_sfnt_off00007d29.bin
6507c774203ddf23498e2bde1021f0b81cbb55f871612d982769f10210af226d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D29 10588 bytes

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