Malicious PDF — malware analysis report

Static analysis result for SHA-256 06ca51ac205f7f90…

MALICIOUS

PDF

36.2 KB Created: 2020-08-08 08:57:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4d0d3a1a9042c67e09ff8f1f2317f89f SHA-1: 3404df4bddfbe43770c1be7e795d16a8ac83a7e7 SHA-256: 06ca51ac205f7f902d99bc0293a9d826c920bd9284ce92da66468d134e2cf972
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, with a critical heuristic firing indicating it points to known malicious redirector infrastructure. The primary malicious URL identified is 'https://ttraff.com/pify?keyword=aberdare+mv+cables+pdf'. While the document body is heavily obfuscated, the presence of multiple external links suggests a link farm or redirection scheme designed to lead users to malicious sites. No scripts were extracted, but the overall structure and link analysis strongly indicate a phishing or redirection attack.

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.com/pify?keyword=aberdare+mv+cables+pdf
    • http://files.himalayanadventures.net/uploads/1/3/0/7/130776366/tineragezenav-dataruduf.pdf
    • http://files.buzzboxguitars.com/uploads/1/3/1/6/131607163/rotusoxobaz.pdf
    • http://files.divinetravelservices.com/uploads/1/3/1/4/131408353/moxebu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/51220099535.pdf
    • https://cdn.shopify.com/s/files/1/0439/9484/1246/files/android_studio_installation_guide.pdf
    • https://cdn.shopify.com/s/files/1/0433/4387/2153/files/44473236714.pdf
    • https://cdn.shopify.com/s/files/1/0433/0287/9387/files/php_regex_cheat_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0432/2348/2530/files/salesforce_admin_interview_questions_and_answers_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/17673355306.pdf
    • https://cdn.shopify.com/s/files/1/0432/5149/9170/files/ad_hoc_network_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/2785/6536/files/winufa.pdf
    • https://cdn.shopify.com/s/files/1/0430/7877/9029/files/231198817.pdf
    • https://cdn.shopify.com/s/files/1/0430/9699/8041/files/pokezajulipunuji.pdf
    • https://cdn.shopify.com/s/files/1/0431/7184/0161/files/jowanesaxoratir.pdf
    • https://cdn.shopify.com/s/files/1/0435/1960/6936/files/xasipunujozikovisasobe.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_off00004fc3.bin
58fae7a52064949ce9b46ffd052d431befb9a112aca578e630d139fc2a7ea0a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4FC3 5488 bytes
font_01_sfnt_off00006257.bin
6e5199ec753909b5d4d84c8e0b93c7e09392e79660b7f1a2e81054428b41294c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6257 9920 bytes

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