Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ae39d9425a6d794…

MALICIOUS

PDF

64.1 KB Created: 2020-11-05 04:24:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2c3ac48ae9c48c310a4c4fe05e8de2e1 SHA-1: 19f731de1ecbce742a540e5b67eba1c9d23a58f1 SHA-256: 2ae39d9425a6d794b94ad9519395923314b4d511715ec205de6fcd4871e3365a
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, including a critical redirector link to 'ttraff.link', suggesting a phishing or scam attempt. The document body, though heavily obfuscated, contains the same lure text as the embedded URL, indicating an attempt to trick users into clicking the malicious link. The presence of many external PDF links further supports a link farm or SEO poisoning tactic.

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.link/123?keyword=best+movie+on+netflix+february+2020
    • https://cdn-cms.f-static.net/uploads/4370263/normal_5f927ba5f1c8e.pdf
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/rebodi.pdf
    • https://cdn-cms.f-static.net/uploads/4369507/normal_5f8c7324e1735.pdf
    • https://xasugalepo.weebly.com/uploads/1/3/4/3/134311154/vudezat-fidupodevu-movedowoxije.pdf
    • https://cdn-cms.f-static.net/uploads/4381289/normal_5f8b11587f50a.pdf
    • https://cdn-cms.f-static.net/uploads/4451744/normal_5fa35b5bc772e.pdf
    • https://cdn-cms.f-static.net/uploads/4369654/normal_5f8b76cb2a1ac.pdf
    • https://vagomonezupu.weebly.com/uploads/1/3/4/4/134403629/443106.pdf
    • https://xabisemegebo.weebly.com/uploads/1/3/4/4/134491474/simuxafijazu.pdf
    • https://cdn-cms.f-static.net/uploads/4376857/normal_5f93401990266.pdf
    • https://wusafasugulub.weebly.com/uploads/1/3/4/5/134586051/3d4a4571.pdf
    • https://cdn-cms.f-static.net/uploads/4410956/normal_5f9665e0f0042.pdf
    • https://cdn-cms.f-static.net/uploads/4407733/normal_5f9249cf31c73.pdf
    • https://cdn-cms.f-static.net/uploads/4368748/normal_5f95098c0111e.pdf
    • https://cdn-cms.f-static.net/uploads/4375708/normal_5f91e370ca5a4.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/af3ea2ac-7e90-4ed6-b55c-258f5c53f3df/51731232216.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_off0000aceb.bin
0f44fad51877be2a999c461b4b1a90acc5496abaf20b085bd4e6f681f700288c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xACEB 5488 bytes
font_01_sfnt_off0000bf85.bin
8c835592459cc9912a126763a51302a5109c1653aac995d8db504c4f20e4683d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBF85 11468 bytes
font_02_sfnt_off0000e4fa.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE4FA 4324 bytes

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