Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cd47f4e5ade129a…

MALICIOUS

PDF

39.4 KB Created: 2020-09-16 19:22:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 46ffb0ece02b10d2277d3bffe230ac4b SHA-1: 30700c8fa1bc22300cac34771d58b6d1b9ebc680 SHA-256: 7cd47f4e5ade129a65595905c436b26972cdaed3278762e3edb574f35875acf2
154 Risk Score

Malware Insights

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

This PDF file contains a link to a known malicious redirector, which is designed to lead users to further malicious content. The document body, though heavily obfuscated, contains the URL 'https://ttraff.link/wix?keyword=worst+acne+ever+pics', suggesting a lure to potentially harmful content. The presence of a large number of external PDF links further indicates a link farm or SEO abuse tactic, aiming to drive traffic to malicious sites.

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/wix?keyword=worst+acne+ever+pics
    • http://ripaz.adibezalel.com/uploads/1/3/2/7/132712593/c9130c86a745.pdf
    • http://zafevarol.englishvintagenotions.com/uploads/1/3/1/4/131408229/gukedexikeve-vaguzo-tiwuz-dunekawewom.pdf
    • http://files.rmrrsha.com/uploads/1/3/1/4/131437295/8513752.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://7c6610ac-ee1a-48dd-9c21-bb948a64b8d5.filesusr.com/ugd/3c2969_93ef20fbd1cb4b958038bd71f8e172c9.pdf?index=true
    • https://38dcdb68-7bb8-4f70-9fd5-15120c4eb8de.filesusr.com/ugd/4cd51e_53394c6c131245788e5718b9a09fe441.pdf?index=true
    • https://031ac371-144b-41c2-9e8d-8ab60e0f7601.filesusr.com/ugd/eaf48f_084008fbe19d4755a6e90bc025705f12.pdf?index=true
    • https://402f1ab5-5c8c-41c0-ac27-0d53d993ffb8.filesusr.com/ugd/daca0d_2b53500797dd4660819873f6e64835b6.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0437/7293/6341/files/gageg.pdf
    • https://cdn.shopify.com/s/files/1/0438/0898/1152/files/mojidoxilavekomopuxe.pdf
    • https://cdn.shopify.com/s/files/1/0463/6629/4171/files/20800688345.pdf
    • https://cdn.shopify.com/s/files/1/0438/1723/8688/files/75847587454.pdf
    • https://cc1fef2c-e45b-4c57-be01-c6ec839808a0.filesusr.com/ugd/17ce20_d1499a6abcbf40abb43c7a8c4c1b0e0e.pdf?index=true
    • https://ee5f076a-4d0e-4b6d-b0ec-609e3c40cd60.filesusr.com/ugd/158fb9_7e4ce6ece0e845c4ab2148fb37cdb2e2.pdf?index=true
    • 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_off00005eb5.bin
26eb94408204596f1601108943bbc6f1685cea76a404d1ee64429212f90aec0c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EB5 4968 bytes
font_01_sfnt_off00006fbd.bin
ad5a565fa750b440058514a36f85b93a4d73a56d071b383debc5eea25da1d497		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FBD 9888 bytes

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