Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c1a1ceae4942817…

MALICIOUS

PDF

82.2 KB Created: 2020-08-10 07:39:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a4f8d781cfdc4fcc2823e26ba0156e47 SHA-1: 782f230d3a8d24851e7bdd9c520e59434e0ca629 SHA-256: 5c1a1ceae4942817099f2007457f0a6a19aa4bb36cc5028d36319321a3fa8ebd
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector infrastructure at 'ttraff.com'. The document body, though heavily obfuscated, contains text suggesting a pharmacovigilance report, likely a lure. The presence of many external PDF links, including benign ones on Shopify, suggests an attempt to blend malicious links with legitimate content, a common tactic in SEO poisoning or link farm schemes.

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=aggregate+reporting+in+pharmacovigilance+pdf
    • http://files.npcdb.com/uploads/1/3/0/7/130775014/papovubir-jowurezezu.pdf
    • http://files.abigailscreendesign.com/uploads/1/3/0/7/130739684/weluzufodajer-maboros-gunibe.pdf
    • http://files.sekulas.com/uploads/1/3/1/4/131453749/lijubisak-topafamerenotij-sutelebip-jurobumubami.pdf
    • http://moxiw.danielboydkramer.com/uploads/1/3/1/6/131637814/jegeziwativaman_luxinomovesu_sokegijas.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/6516/3422/files/33152141594.pdf
    • https://cdn.shopify.com/s/files/1/0433/1310/2998/files/icao_annex_16_volume_1.pdf
    • https://cdn.shopify.com/s/files/1/0454/5613/0200/files/all_animals_photos.pdf
    • https://cdn.shopify.com/s/files/1/0430/3912/9751/files/anatomy_of_cerebral_cortex.pdf
    • https://cdn.shopify.com/s/files/1/0433/9469/5329/files/23098259059.pdf
    • https://cdn.shopify.com/s/files/1/0431/8186/7176/files/pifupunolo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/70278744099.pdf
    • https://cdn.shopify.com/s/files/1/0436/9140/9562/files/39727141892.pdf
    • https://cdn.shopify.com/s/files/1/0437/4790/1592/files/sufolumawevadipujo.pdf
    • https://cdn.shopify.com/s/files/1/0438/8392/1563/files/28303993227.pdf
    • https://cdn.shopify.com/s/files/1/0428/1594/6918/files/analytical_geometry_3d_vector_calculus.pdf
    • https://cdn.shopify.com/s/files/1/0437/7106/8565/files/94585905152.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/23929268289.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_off000104c5.bin
e562d6bd903b612fa6b5f842b4eca2b25c2f44b00d7c6ce4b47d5134c3508345		 pdf-font-stream PDF embedded font (sfnt) at offset 0x104C5 5440 bytes
font_01_sfnt_off0001172b.bin
1ea5b92da5f5126666a52af177aca7266c6c3ebd71d0d87a358b56491fed7d6f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1172B 10636 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.