Malicious PDF — malware analysis report

Static analysis result for SHA-256 7118496624089a7f…

MALICIOUS

PDF

42.9 KB Created: 2020-08-31 22:09:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 838e304941d5b63212f17d991dabb504 SHA-1: c33405d96a8737304ce6e63ecfdd120743b7519f SHA-256: 7118496624089a7f8fd82117c3a6722961628af0105ec8c19c6ceff1cd6a4863
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically the URL https://ttraff.cc/wix?keyword=wedding+couple+dance+video. It also exhibits characteristics of a PDF link farm, embedding numerous external PDF links, many of which point to benign Shopify domains. The ML classifier strongly indicates maliciousness. The presence of embedded URLs and the redirector link suggest an attempt to lead the user to a malicious site, likely for phishing or malware distribution.

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/wix?keyword=wedding+couple+dance+video
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/9125/3653/files/lifetime_tv_guide_usa.pdf
    • https://cdn.shopify.com/s/files/1/0428/5107/4214/files/3rd_grade_math_practice_workbook.pdf
    • https://cdn.shopify.com/s/files/1/0428/1293/2255/files/16862565753.pdf
    • https://cdn.shopify.com/s/files/1/0434/6976/6821/files/55492974322.pdf
    • https://cdn.shopify.com/s/files/1/0434/4155/3575/files/school_uniform_essay_sample.pdf
    • https://static.usrfiles.com/ugd/824332_2ada2939d37048f69493cd7550121a25.pdf
    • https://static.usrfiles.com/ugd/b8c837_ed579ad385854d5c88d434ac03084648.pdf
    • https://static.usrfiles.com/ugd/04c368_e6b116607158451bb036e5d3c636ec8e.pdf
    • https://static.usrfiles.com/ugd/e6092c_756c8eb62e2c4ef4ba77e16477eb57a6.pdf
    • https://static.usrfiles.com/ugd/6260fe_eaba2db564bd41c481e439d4ca47b352.pdf
    • https://cdn.shopify.com/s/files/1/0429/3863/0300/files/eurovan_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/mai_dhundhne_ko_jamane_me.pdf
    • https://cdn.shopify.com/s/files/1/0437/0091/2278/files/zoledisalexovu.pdf
    • https://cdn.shopify.com/s/files/1/0434/7333/8533/files/11338769017.pdf
    • https://static.usrfiles.com/ugd/ed64d2_3a35a22fcf67425d8e7ecc7bbd408716.pdf
    • https://static.usrfiles.com/ugd/b8c837_24a6a1ce6bea4e7691dbb652117ab3e4.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_off00006b61.bin
d95a753e2c11d3a35e068a0b1605a38e6529d9312aa8827838c2db46763da8b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B61 5040 bytes
font_01_sfnt_off00007cb4.bin
33ba53f9e88ccc889586f5d5e6ae319eb6a6c8fdd79dc2a417c38f4fbaf54344		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CB4 9904 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.