Malicious PDF — malware analysis report

Static analysis result for SHA-256 0967f1a1a0c6dfd7…

MALICIOUS

PDF

43.0 KB Created: 2020-08-15 01:47:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4807e9f8e428645f3d439c8f8306758a SHA-1: cf45eaedfc8b921194e5700c8863782cab5fc3a3 SHA-256: 0967f1a1a0c6dfd7a4b28f13cb67115013e0d592e73582027b859cbe8ccb44e5
154 Risk Score

Malware Insights

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

The PDF document contains a link farm and a malicious redirector URL, suggesting it is designed to lead users to potentially harmful content. The embedded text and URLs indicate a lure related to software, specifically "After effect cs6 mac", which redirects to a suspicious domain. While no scripts were directly extracted, the PDF structure and embedded links are indicative of 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=after+effect+cs6++mac
    • http://files.swanitude.com/uploads/1/3/1/4/131438583/rexemavorimafe_widek_bigodekujefukaw_zotekeni.pdf
    • http://gadavawe.audiotechmalta.com/uploads/1/3/0/8/130874211/fdf551a15e8.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0432/3550/8387/files/medicinal_and_aromatic_plants_industrial_profiles.pdf
    • https://cdn.shopify.com/s/files/1/0438/3706/3328/files/68134248723.pdf
    • https://cdn.shopify.com/s/files/1/0431/2891/4074/files/lobejakevewij.pdf
    • https://cdn.shopify.com/s/files/1/0433/4272/5275/files/teroga.pdf
    • https://cdn.shopify.com/s/files/1/0431/9494/1603/files/8023458754.pdf
    • https://cdn.shopify.com/s/files/1/0436/7895/7718/files/sapoganinolowusawukizo.pdf
    • https://cdn.shopify.com/s/files/1/0433/4416/7064/files/badijejopa.pdf
    • https://cdn.shopify.com/s/files/1/0432/6116/5723/files/crucial_conversations_training.pdf
    • https://cdn.shopify.com/s/files/1/0430/6799/8362/files/potobije.pdf
    • https://cdn.shopify.com/s/files/1/0431/3799/0813/files/air_pollution_control_projects.pdf
    • https://cdn.shopify.com/s/files/1/0438/2159/6834/files/28543594879.pdf
    • https://cdn.shopify.com/s/files/1/0437/2905/9991/files/1605129335.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005ea8.bin
c78aa15964f8fc7c8b3c7becc3c3a29b444d902f9177bd223c4fffb8a2e9c23e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EA8 4664 bytes
font_01_sfnt_off00006e6c.bin
6c6436185dbea8c7f843facc3bf426362bb35283d8a1d09ee04c8a7cbb2bde73		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E6C 10232 bytes
font_02_sfnt_off0000913f.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x913F 4324 bytes

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