Malicious PDF — malware analysis report

Static analysis result for SHA-256 60cfc2890e5f4439…

MALICIOUS

PDF

45.8 KB Created: 2020-08-06 06:23:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 539a2b0dac4f93d9ec3d13bb5e4be0ce SHA-1: 25797c7d10a97c469d8aefa5e788d9d628041f28 SHA-256: 60cfc2890e5f443956a95228695249ff8d1e6d53da7cf6c665c6f678884f69c2
154 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for linking to known malicious redirector infrastructure, specifically pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL, suggesting an attempt to trick users into visiting a malicious site under the guise of accessing a financial management book. The presence of numerous Shopify-hosted PDF links further indicates a link farm or SEO manipulation 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.com/pify?keyword=public+financial+management+book+pdf
    • http://files.caseyharvilla.com/uploads/1/3/2/7/132712214/vevuzupakaki.pdf
    • http://files.neomatloga.com/uploads/1/3/1/3/131383398/taroradofoteda-kugudiki-sesorin.pdf
    • http://gibixa.idea-alice.com/uploads/1/3/2/6/132682646/1921429.pdf
    • http://zibalik.identifyalaska.com/uploads/1/3/1/4/131454373/5019770.pdf
    • http://bivole.antiquequilthistory.com/uploads/1/3/1/0/131070786/60326326467.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0427/6885/9303/files/buludilozoravug.pdf
    • https://cdn.shopify.com/s/files/1/0434/1625/6677/files/jugopabafem.pdf
    • https://cdn.shopify.com/s/files/1/0439/6302/3518/files/jelijakutub.pdf
    • https://cdn.shopify.com/s/files/1/0431/6119/0554/files/69435281298.pdf
    • https://cdn.shopify.com/s/files/1/0432/9901/2766/files/5682280775.pdf
    • https://cdn.shopify.com/s/files/1/0430/7006/2754/files/62865058561.pdf
    • https://cdn.shopify.com/s/files/1/0428/5346/6271/files/engineering_design_reliability_handbook.pdf
    • https://cdn.shopify.com/s/files/1/0428/2341/8019/files/wudeviw.pdf
    • https://cdn.shopify.com/s/files/1/0440/4117/5190/files/list_to_csv_python.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_off00006688.bin
60fe27cd8f2971eef8224dd30e0bab7709689a72b7860d8228c3e1c0cbca4b46		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6688 5288 bytes
font_01_sfnt_off00007867.bin
fd2b6b97b6380b8bc584843bf493b40c844bf5945b6172256da64c2a83742374		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7867 10532 bytes
font_02_sfnt_off00009c41.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C41 4324 bytes

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