Malicious PDF — malware analysis report

Static analysis result for SHA-256 5cba5074335045f2…

MALICIOUS

PDF

50.2 KB Created: 2020-08-29 09:22:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 371208d56bcc30b67b521e291bb2682d SHA-1: 060624dec36c35fac3c1444d68410da4314ab3a0 SHA-256: 5cba5074335045f21c481074bc41951d1e338531bd038402c7459340829f5f72
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains numerous links, including one pointing to a known malicious redirector infrastructure at ttraff.com. The document body, though heavily obfuscated, appears to contain references to game-related topics and URLs, suggesting a lure to attract user clicks. The presence of a large number of external PDF links, many hosted on Shopify, indicates a potential link farm or SEO manipulation tactic to distribute 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.com/wix?keyword=dota+auto+chess+synergies
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0440/0968/5157/files/epfo_kyc_digital_verification_process_with_dsc.pdf
    • https://cdn.shopify.com/s/files/1/0438/4784/4000/files/bsc_agriculture_entrance_exam_syllabus.pdf
    • https://cdn.shopify.com/s/files/1/0430/9437/6599/files/78389547481.pdf
    • https://cdn.shopify.com/s/files/1/0431/7744/3483/files/midozonesoxodane.pdf
    • https://static.usrfiles.com/ugd/b8c837_3df649c4ffdc4755ad0877157f347219.pdf
    • https://static.usrfiles.com/ugd/b8c837_9cdbd09826174cb48b6e74d7cab70552.pdf
    • https://static.usrfiles.com/ugd/b8c837_37ebca5215094a1cb1e566d6df96baff.pdf
    • https://static.usrfiles.com/ugd/b8c837_3d11e7ab723e474db2ac34467a97e171.pdf
    • https://static.usrfiles.com/ugd/b8c837_2fcc576ca8564adf9185efd0e838529a.pdf
    • https://static.usrfiles.com/ugd/b8c837_47f24f7d3fb443b286c869478c059c20.pdf
    • https://static.usrfiles.com/ugd/b8c837_161e9df514844edc94130f2413941bc1.pdf
    • https://static.usrfiles.com/ugd/b8c837_455f551428b740809a72f88b29ea7ddc.pdf
    • https://static.usrfiles.com/ugd/b8c837_434ccc9b8f9e4b3ba382b2214af7b011.pdf
    • https://static.usrfiles.com/ugd/b8c837_768799232fe64d4eb1ea42bf39b28721.pdf
    • https://static.usrfiles.com/ugd/b8c837_449c8b9347844038874b72f085299a9e.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000651b.bin
706310dd071cff7e36f55acfa6def6b2610d4676cc072f9429c75563ad1b8c2e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x651B 5012 bytes
font_01_sfnt_off00007623.bin
abfe33f368bc95b5d143a44a4173b75ddc7362d8296f0565a6b0f44ad0ea0a30		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7623 10176 bytes
font_02_sfnt_off000098ff.bin
39b2f4b99ee08965fd4836f89f628a00cde8346cb181131bba0308e80db8fb67		 pdf-font-stream PDF embedded font (sfnt) at offset 0x98FF 16092 bytes
font_03_sfnt_off0000adc6.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xADC6 4324 bytes

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