Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ce6b233395a9fce…

MALICIOUS

PDF

35.1 KB Created: 2020-08-20 19:18:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2b5571a597e7df2e3db4b535168c5347 SHA-1: b92b96647ceb5d68eab242e24d1abb1337c3c4d1 SHA-256: 4ce6b233395a9fceeb4c9ac33d96e89df639feb1b39a2255058e91197ef43375
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, directing users to 'https://ttraff.cc/pify?keyword=hugo+boss+mens+belt+size+guide'. This indicates a phishing or scam attempt, likely aiming to redirect users to a malicious site. The document also exhibits characteristics of a link farm, with numerous embedded links to external PDFs, further supporting the malicious intent.

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=hugo+boss+mens+belt+size+guide
    • http://files.theleastoftheseministry.org/uploads/1/3/0/7/130739348/danasabitefedi_nesasul.pdf
    • https://cdn.shopify.com/s/files/1/0429/4764/1511/files/gisifudizaze.pdf
    • https://cdn.shopify.com/s/files/1/0437/5589/6990/files/29824261654.pdf
    • https://cdn.shopify.com/s/files/1/0434/1222/6200/files/pipujomesubitus.pdf
    • https://cdn.shopify.com/s/files/1/0431/3019/2039/files/dagamupoguzigirina.pdf
    • https://cdn.shopify.com/s/files/1/0435/7426/3963/files/nimexaz.pdf
    • https://cdn.shopify.com/s/files/1/0429/1949/3785/files/vugal.pdf
    • https://cdn.shopify.com/s/files/1/0431/3071/6314/files/contemporary_strategy_analysis_8th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0437/9761/0657/files/sedubawu.pdf
    • https://cdn.shopify.com/s/files/1/0431/6584/3620/files/oscar_awards_2020_in_telugu.pdf
    • https://cdn.shopify.com/s/files/1/0432/7217/5784/files/fujuroboxobozujake.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004c98.bin
f46c9433f64c6a1957f17424dd5c6699b439b5e2b76225c0f5617dd7219fb472		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4C98 4988 bytes
font_01_sfnt_off00005d7f.bin
cedee6e44a6a3f7377718023e81acbb1dd328fd6b482f4ff3cde8ca75cd59926		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D7F 10084 bytes

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