Malicious PDF — malware analysis report

Static analysis result for SHA-256 76e731f0980a3e73…

MALICIOUS

PDF

44.6 KB Created: 2020-08-15 08:33:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ef3e56e48977114c6f2ddbb23926688e SHA-1: 9c92111a5fac92534b246f0d954636e5c9d2a032 SHA-256: 76e731f0980a3e731d8d4ca44f158496462d2470e405596e298ee0469ee46b73
154 Risk Score

Malware Insights

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

The PDF contains a mass of external links, with one identified as a malicious redirector. The primary malicious URL is https://ttraff.cc/pify?keyword=tileset+template+rpg+maker+mv, which likely leads to a phishing or malware distribution site. The document body itself is heavily obfuscated and contains embedded URLs, 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=tileset+template+rpg+maker+mv
    • http://files.patriciajonescounseling.com/uploads/1/3/1/6/131636988/nubavawibex_vosimoz.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/5293/3021/files/47513757362.pdf
    • https://cdn.shopify.com/s/files/1/0434/5180/9959/files/usga_handicap_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/0077/4308/files/kupid.pdf
    • https://cdn.shopify.com/s/files/1/0428/2885/7503/files/lowimemekifeve.pdf
    • https://cdn.shopify.com/s/files/1/0437/7218/2685/files/daxapika.pdf
    • https://cdn.shopify.com/s/files/1/0433/0163/4213/files/85264103641.pdf
    • https://cdn.shopify.com/s/files/1/0430/1747/0101/files/femimosizetumukelasi.pdf
    • https://cdn.shopify.com/s/files/1/0436/7309/2246/files/magazine_online.pdf
    • https://cdn.shopify.com/s/files/1/0432/8026/9477/files/fufobavipovesem.pdf
    • https://cdn.shopify.com/s/files/1/0430/4257/0402/files/fekibalowolebe.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_off00006fd9.bin
5a0a193a9c5c837d8e498a1926ff5d6ff0b8650574d3b3338b92afe016ac4adf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FD9 5212 bytes
font_01_sfnt_off00008181.bin
4fcfa3b93001458720d03e33fe72104110f59d44418358a701aa13c121e4f097		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8181 10744 bytes

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