Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e480bfe088c48b1…

MALICIOUS

PDF

46.4 KB Created: 2020-07-29 15:08:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ec82698cf725271b09767ef1a5efd2ba SHA-1: 1a99c5e422b3dcd37dd576ab815d7facb44370a4 SHA-256: 9e480bfe088c48b15fe15279c89ef29a8b02c03ce3da2b6ce94580330730ae75
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically identified by the 'ttraff.cc' domain. The document body, though heavily obfuscated, suggests a lure related to vehicle sales, aiming to trick users into clicking the malicious link. The ML classifier strongly supports the malicious nature of this PDF.

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/pify?keyword=acte+de+vente+v%25C3%25A9hicule+pdf
    • http://files.clubjamba.com/uploads/1/3/1/3/131383998/9320851.pdf
    • http://files.gkcphotography.com/uploads/1/3/0/8/130874130/zudelogiju_simeruvudi_pijozozexatifex_dutevilikoxewab.pdf
    • http://files.whitridgewellness.com/uploads/1/3/2/6/132695701/nulafazazusak-kazegilu-kobolukux.pdf
    • http://files.overandoutpetsitting.com/uploads/1/3/0/9/130969811/gutanabotexanutu.pdf
    • http://files.youthmusicaltheatre.com/uploads/1/3/1/4/131452883/fivavubizulevo.pdf
    • https://cdn.shopify.com/s/files/1/0439/1321/6168/files/49694409762.pdf
    • https://cdn.shopify.com/s/files/1/0432/9367/1590/files/kaxule.pdf
    • https://cdn.shopify.com/s/files/1/0432/4923/8178/files/naxovurejimanobawow.pdf
    • https://cdn.shopify.com/s/files/1/0435/4415/0165/files/sofudidofufuf.pdf
    • https://cdn.shopify.com/s/files/1/0432/5680/7586/files/52460318529.pdf
    • https://cdn.shopify.com/s/files/1/0430/3159/3113/files/53221670559.pdf
    • https://cdn.shopify.com/s/files/1/0427/4854/3142/files/zijulidimadenuloxigo.pdf
    • https://cdn.shopify.com/s/files/1/0429/6874/4087/files/zivib.pdf
    • https://cdn.shopify.com/s/files/1/0437/6877/4807/files/fudaxevametiwipesed.pdf
    • https://cdn.shopify.com/s/files/1/0433/2073/7950/files/91096427187.pdf
    • https://cdn.shopify.com/s/files/1/0429/6248/5407/files/zupiziv.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/
    • https://cdn.shopify.com/s/files/1/0435/4415/0165/files/sofudidofufuf.p

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000076e0.bin
a851c62d1a20ac3aa1113224baf63e684f00f7d302fcfe1b865be5b1af668df7
pdf-font-stream PDF embedded font (sfnt) at offset 0x76E0 4724 bytes
font_01_sfnt_off000086a2.bin
d3a6bdcd19983c15e4dd91266acec169d99bcc6e939e686a61f69eed5914d7bd
pdf-font-stream PDF embedded font (sfnt) at offset 0x86A2 11588 bytes