Malicious PDF — malware analysis report

Static analysis result for SHA-256 6654db320764f142…

MALICIOUS

PDF

46.9 KB Created: 2020-08-27 19:02:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 30fcdd5878f5a76ed075f545cf121ecf SHA-1: be66644a28356952bb459c9429572734638b76bd SHA-256: 6654db320764f1424eecc9bdbb2289627ddedd3baa08d460e778bc3ed04ddc13
154 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for linking to known malicious redirector infrastructure, specifically pointing to 'ttraff.club'. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector. This suggests the document is designed to redirect users to malicious content, 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.club/pify?keyword=famous+quotes+for+essay+writing
    • http://files.3sistersgrace.com/uploads/1/3/2/6/132696210/c1a97.pdf
    • http://files.campus-house.com/uploads/1/3/1/4/131483391/finuk_xatepebumotuz.pdf
    • http://temiwe.susanmiillerart.com/uploads/1/3/1/1/131164239/2275916.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/8993/7055/files/peyami_safa_tC3BCrk_inkC4B1labC4B1na_bakC4B1C59Flar.pdf
    • https://cdn.shopify.com/s/files/1/0433/9525/2374/files/76855978549.pdf
    • https://cdn.shopify.com/s/files/1/0437/7142/9015/files/voruragunum.pdf
    • https://cdn.shopify.com/s/files/1/0451/5515/6122/files/brilliant_legacy_480p_sub_indo.pdf
    • https://cdn.shopify.com/s/files/1/0445/5543/6196/files/attitude_determines_altitude_shiv_khera.pdf
    • https://cdn.shopify.com/s/files/1/0430/9437/6605/files/2182381259.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xidegafizupewutuzu.pdf
    • https://cdn.shopify.com/s/files/1/0443/8222/4550/files/39182787325.pdf
    • https://cdn.shopify.com/s/files/1/0429/5386/7427/files/bukobebugapubuketin.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_off000079ce.bin
80542b80923e440f29aac5349b32173eebf4b7ef3a6bcb1f731cf09107e96cd6
pdf-font-stream PDF embedded font (sfnt) at offset 0x79CE 5328 bytes
font_01_sfnt_off00008bfe.bin
79829b8998c14a192d3f5b9b14d04d6220dadb4eeab0bc4474cf5f4f27745da6
pdf-font-stream PDF embedded font (sfnt) at offset 0x8BFE 10204 bytes