Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d0fad1efac8e775…

MALICIOUS

PDF

45.6 KB Created: 2020-08-02 07:45:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2a25b2e11b9964bcf7cede80edb46fb5 SHA-1: 7f545c8c7bd01f895fe2c79b9b107a958f064750 SHA-256: 6d0fad1efac8e7755b3bf5725ce9164e35a58cf02f85fe280a30077707cf11ba
154 Risk Score

Malware Insights

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

This PDF file contains multiple embedded links, with a primary link redirecting to a known malicious domain, ttraff.ru. The document body, though heavily obfuscated, contains text referencing 'The Carter 4 download' and the malicious URL, suggesting a social engineering lure to drive traffic to malicious infrastructure. The ML classifier also strongly indicated maliciousness.

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.ru/pify?keyword=the+carter+4+download
    • http://files.australianchurchofantioch.com/uploads/1/3/1/4/131437249/jajobaxar_xozunagerumog.pdf
    • http://files.huntershealingcalls.com/uploads/1/3/1/4/131438216/vumevatazagovo.pdf
    • http://files.heal2change.com/uploads/1/3/0/7/130774993/jukurujiwarub_lesuvopivapo_zilate.pdf
    • http://files.spinalunwinding.com/uploads/1/3/1/8/131871698/9679e8725f490.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/4712/4130/files/84523280372.pdf
    • https://cdn.shopify.com/s/files/1/0433/0346/9206/files/robipevaxo.pdf
    • https://cdn.shopify.com/s/files/1/0435/5093/3156/files/kesugizotavor.pdf
    • https://cdn.shopify.com/s/files/1/0432/4786/1928/files/3685117778.pdf
    • https://cdn.shopify.com/s/files/1/0428/5680/8607/files/tajanasatuwime.pdf
    • https://cdn.shopify.com/s/files/1/0430/8297/3346/files/mafirizegudemejuzufe.pdf
    • https://cdn.shopify.com/s/files/1/0432/6585/1542/files/50560522945.pdf
    • https://cdn.shopify.com/s/files/1/0430/5158/1597/files/52419843021.pdf
    • https://cdn.shopify.com/s/files/1/0434/4083/2678/files/dosewabobanorifatetone.pdf
    • https://cdn.shopify.com/s/files/1/0433/8214/5182/files/55682412330.pdf
    • https://cdn.shopify.com/s/files/1/0431/2154/1274/files/maxavekulera.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/66691602327.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_off00007574.bin
6658402237a246a83e01cd35ea904216ab79412a2e60e700cd0944fb453f0bbc
pdf-font-stream PDF embedded font (sfnt) at offset 0x7574 4980 bytes
font_01_sfnt_off00008672.bin
c37053a755a1be087e6d7eacf1507e1eb68d2dd76fb173b85ed428af2ab8ef64
pdf-font-stream PDF embedded font (sfnt) at offset 0x8672 10220 bytes