Malicious PDF — malware analysis report

Static analysis result for SHA-256 fed66a93622f126d…

MALICIOUS

PDF

40.6 KB Created: 2020-08-10 13:08:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cb5ae3b903d144fde2e9f8f41cbf4e87 SHA-1: d3f8360f7f436a106b896c8eb2019c24cd6f95c9 SHA-256: fed66a93622f126d6e6ed27b189d953dfebf8e81e6a4ef3d7fad4f5e3d7e8f1d
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector at 'https://ttraff.com/pify?keyword=schneider+electric+easy9+catalogue+pdf'. The document body, though heavily obfuscated, appears to contain metadata related to a Schneider Electric catalogue, suggesting a lure to disguise the malicious links. The ML classifier strongly indicated maliciousness, and the presence of a link farm further supports a malicious intent to redirect users to potentially harmful sites.

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=schneider+electric+easy9+catalogue+pdf
    • http://files.dmvaupair.com/uploads/1/3/0/8/130874668/e0f0c9cea7.pdf
    • http://pazulor.theelegantrider.com/uploads/1/3/2/6/132681670/rowovaliwewit_gubijowavidajid_legubelu.pdf
    • http://files.garydawsondesigns.com/uploads/1/3/1/0/131069915/paxogedasep.pdf
    • http://files.homeschoolbrew.com/uploads/1/3/0/7/130738696/af040659556e1.pdf
    • https://cdn.shopify.com/s/files/1/0438/4745/0784/files/95436991777.pdf
    • https://cdn.shopify.com/s/files/1/0434/7304/3622/files/cctv_installation_diagram.pdf
    • https://cdn.shopify.com/s/files/1/0432/6440/9755/files/76437957393.pdf
    • https://cdn.shopify.com/s/files/1/0432/6585/1542/files/6356279738.pdf
    • https://cdn.shopify.com/s/files/1/0430/0147/9321/files/9227849929.pdf
    • https://cdn.shopify.com/s/files/1/0436/4160/2198/files/23714506881.pdf
    • https://cdn.shopify.com/s/files/1/0435/9503/8877/files/types_of_door_access_control_systems.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/81256704061.pdf
    • https://cdn.shopify.com/s/files/1/0429/4089/1292/files/78316249407.pdf
    • https://cdn.shopify.com/s/files/1/0435/0076/5336/files/lesagusubat.pdf
    • https://cdn.shopify.com/s/files/1/0439/2235/8427/files/86281901075.pdf
    • https://cdn.shopify.com/s/files/1/0434/6649/0006/files/jilekimubojadidewugepef.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/
    • https://cdn.shopify.com/s/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005ea0.bin
9815bf4c7af4e08b039e4d6a9e7bd7a0ec1bfe87aea82b5b764a8e533da65041		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EA0 5780 bytes
font_01_sfnt_off00007238.bin
6428d4382ca8e31ee3f1e2e344dbd1cd703452c1b1b2e2b492347077d3a193c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7238 10252 bytes

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