Malicious PDF — malware analysis report

Static analysis result for SHA-256 45603e3ec51adfe6…

MALICIOUS

PDF

40.7 KB Created: 2020-08-11 00:45:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e345bf9e9ac7e645bd7538a1c09ea862 SHA-1: 0196cf7df4f4eb2d37257265234ffca7e16f86b9 SHA-256: 45603e3ec51adfe6affae5ccea7dd0e05f72c8b775ef16dc6bdba70e37aa367d
154 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and contains a critical heuristic indicating a link to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=palmistry+pdf+free', which is also listed as a malicious redirector. The presence of numerous other Shopify links suggests an attempt to obscure the malicious destination.

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=palmistry+pdf+free
    • http://files.makingcollegemorecommon.com/uploads/1/3/0/7/130775751/2696275.pdf
    • http://files.glenagould.com/uploads/1/3/1/3/131384306/litol.pdf
    • http://files.juspampered.com/uploads/1/3/2/7/132741241/7000269.pdf
    • http://files.oswegoboystrack.com/uploads/1/3/1/3/131398231/rofekuvopinasoti.pdf
    • http://files.ovalaboratories.studio/uploads/1/3/2/6/132681772/1f1933783460d.pdf
    • https://cdn.shopify.com/s/files/1/0429/3227/3319/files/94318464582.pdf
    • https://cdn.shopify.com/s/files/1/0436/1139/0115/files/21391586991.pdf
    • https://cdn.shopify.com/s/files/1/0428/4760/0796/files/visobekijapazupujuse.pdf
    • https://cdn.shopify.com/s/files/1/0432/5048/3368/files/minecraft_wheat_farm_design.pdf
    • https://cdn.shopify.com/s/files/1/0436/9619/3686/files/riesgo_biologico_colombia.pdf
    • https://cdn.shopify.com/s/files/1/0428/1230/9670/files/largo_police_active_calls.pdf
    • https://cdn.shopify.com/s/files/1/0433/5036/0232/files/junior_animal_habitats_badge.pdf
    • https://cdn.shopify.com/s/files/1/0440/4376/3862/files/5034774257.pdf
    • https://cdn.shopify.com/s/files/1/0438/7468/0987/files/24393013659.pdf
    • https://cdn.shopify.com/s/files/1/0432/5464/4894/files/tojuganabovis.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_off00006274.bin
20a094e542a7efd1161ae92fbe0ebb62a3a9b7594b18ef9a28cd5dce4a9556ab
pdf-font-stream PDF embedded font (sfnt) at offset 0x6274 5288 bytes
font_01_sfnt_off00007461.bin
5c91f075d96e0820436be15d1291e1ab8b06d75e8de593bca44f866cbc7dc731
pdf-font-stream PDF embedded font (sfnt) at offset 0x7461 9908 bytes