Malicious PDF — malware analysis report

Static analysis result for SHA-256 09355244a96cbba4…

MALICIOUS

PDF

42.7 KB Created: 2020-08-10 20:29:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aab99973061842b54cd5b2241ca5b0a7 SHA-1: 1214a8696ff005841d17f323ce36a2875d6e45c6 SHA-256: 09355244a96cbba4d4454ea3332e1e06361eded533aab95fe967491a95936c22
154 Risk Score

Malware Insights

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

The PDF contains embedded links, with one specifically identified as a malicious redirector pointing to 'https://ttraff.com/pify?keyword=bluebeam+revu+training+pdf'. The document body and heuristics indicate a lure related to 'Bluebeam revu training pdf', suggesting a phishing attempt to redirect users to malicious content. 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.com/pify?keyword=bluebeam+revu+training+pdf
    • http://logeta.climbireland.com/uploads/1/3/2/8/132814930/zijukopudipip-kazafebeta-dekosuzet-xarelotome.pdf
    • http://files.dfhsscienceresearch.org/uploads/1/3/0/8/130813705/bigat-sibizaberito-senukazefineva.pdf
    • http://tomojam.amoredifiori.com/uploads/1/3/0/7/130776728/93d487fa5d9.pdf
    • http://files.geoffleavenworth.com/uploads/1/3/1/4/131437157/lurineratoduj.pdf
    • http://files.rogerconlon.com/uploads/1/3/1/3/131380687/8815339.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/1280/8091/files/hematopoiesis_process.pdf
    • https://cdn.shopify.com/s/files/1/0429/9338/5633/files/79461114491.pdf
    • https://cdn.shopify.com/s/files/1/0430/3686/8762/files/convert_caf_to_mp3.pdf
    • https://cdn.shopify.com/s/files/1/0428/3367/4396/files/66593023268.pdf
    • https://cdn.shopify.com/s/files/1/0453/8961/1176/files/further_mathematics_for_economic_analysis_knut_sydsaeter.pdf
    • https://cdn.shopify.com/s/files/1/0432/8279/2606/files/7_sins_video_game.pdf
    • https://cdn.shopify.com/s/files/1/0432/6129/6790/files/75953934140.pdf
    • https://cdn.shopify.com/s/files/1/0431/8078/5823/files/89936362803.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/76957488457.pdf
    • https://cdn.shopify.com/s/files/1/0433/7090/5756/files/candy_convert.pdf
    • https://cdn.shopify.com/s/files/1/0431/9690/7678/files/50494217594.pdf
    • https://cdn.shopify.com/s/files/1/0431/8353/8331/files/56291775985.pdf
    • https://cdn.shopify.com/s/files/1/0428/1381/6995/files/rinuraziv.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/6338597663.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_off0000652d.bin
94e78566810a06ca7a1453ad215919d11010b1a8c5edd106cefe8d03e0952eba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x652D 5432 bytes
font_01_sfnt_off00007797.bin
9dcce26d17c2dab13476e2961e51088f75aba51525bdc0d4a4771b3ebfbdb5ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7797 11268 bytes

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