Malicious PDF — malware analysis report

Static analysis result for SHA-256 1204e035ce800dc6…

MALICIOUS

PDF

56.2 KB Created: 2020-08-01 17:41:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1b5725a8e8595d5f14ecff802c87ca17 SHA-1: e80dc2ca91a6efcfdf614124f805f0f2f6c0e0bd SHA-256: 1204e035ce800dc6da3c435176431576b38e62d634c60e0b1b87f384c5ed1757
154 Risk Score

Malware Insights

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

The PDF contains numerous links, with a critical heuristic identifying a link to a known malicious redirector at 'https://ttraff.cc/pify?keyword=default+3d+minecraft'. The document body, though heavily obfuscated, contains this URL, suggesting an attempt to direct the user to malicious infrastructure. The presence of a large number of external PDF links also indicates a link farm, often used for SEO manipulation or to host further malicious content.

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.cc/pify?keyword=default+3d+minecraft
    • http://files.focusedlearningsolutions.com/uploads/1/3/1/6/131636990/49d8e9.pdf
    • http://files.regreenbanglabd.com/uploads/1/3/2/7/132740511/10de051b3dbe.pdf
    • http://files.clockhouse-marnhull.com/uploads/1/3/1/4/131437919/5156961.pdf
    • http://files.laurenandresurbanist.com/uploads/1/3/0/7/130776151/lodimeroporadelir.pdf
    • http://files.adventist-mission-philippines.com/uploads/1/3/0/7/130739571/b15cdcc12.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/5466/0758/files/zugazixa.pdf
    • https://cdn.shopify.com/s/files/1/0434/2025/4375/files/mubavofudevapo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/resozelofik.pdf
    • https://cdn.shopify.com/s/files/1/0436/6820/9817/files/fixolepa.pdf
    • https://cdn.shopify.com/s/files/1/0429/5000/0796/files/63835438542.pdf
    • https://cdn.shopify.com/s/files/1/0432/1263/6322/files/redamakibovafaxagaru.pdf
    • https://cdn.shopify.com/s/files/1/0434/2625/0917/files/povugemes.pdf
    • https://cdn.shopify.com/s/files/1/0436/7345/2697/files/85990538538.pdf
    • https://cdn.shopify.com/s/files/1/0435/2465/3224/files/41167319563.pdf
    • https://cdn.shopify.com/s/files/1/0432/3459/0888/files/50619553475.pdf
    • https://cdn.shopify.com/s/files/1/0432/8692/1376/files/lubinedekikinazorajazu.pdf
    • https://cdn.shopify.com/s/files/1/0432/0867/1394/files/46525839135.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_off00009e1e.bin
137a5f38347f7af0f768e257c82fc4b7294e43e664834f8a4e420ccb05b0269c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9E1E 5152 bytes
font_01_sfnt_off0000af99.bin
6bf7cdc60ebe2c351c53130923b7342fe0b9aa3a7db9d82d0b70795b55c033fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAF99 10632 bytes

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