Malicious PDF — malware analysis report

Static analysis result for SHA-256 3513f70d81d6c4ce…

MALICIOUS

PDF

40.5 KB Created: 2020-08-02 13:19:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 61102265705bf1c2f46714a965f793f7 SHA-1: 6883f19768d970576defa0120cc912d509c3d8ef SHA-256: 3513f70d81d6c4ce3b38a8231b76ff4e291b220035eb306211f76fdbea078628
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to benign Shopify-hosted PDFs. However, one critical link redirects to `https://ttraff.com/pify?keyword=2005+honda+rincon+650+service+manual+pdf`, which is known malicious redirector infrastructure. The document body text is heavily obfuscated but appears to contain the same lure text as the malicious URL. No scripts were extracted from this sample.

Heuristics 3

  • 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.
  • 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=2005+honda+rincon+650+service+manual+pdf
    • http://files.michaelbukoski.com/uploads/1/3/1/0/131070051/2701662.pdf
    • http://files.nammb.org/uploads/1/3/1/3/131384359/gekoranekenimag.pdf
    • http://files.ameliasclosetfilm.com/uploads/1/3/0/8/130873829/retim_tenigiwiguwutew_noniwe_susisupufu.pdf
    • https://cdn.shopify.com/s/files/1/0431/8858/4605/files/zevudilotan.pdf
    • https://cdn.shopify.com/s/files/1/0438/6809/4629/files/technical_communication_10th_edition_mike_markel.pdf
    • https://cdn.shopify.com/s/files/1/0429/9282/8579/files/fimukaxititusodezuvok.pdf
    • https://cdn.shopify.com/s/files/1/0430/2058/3065/files/crystal_mountain_snow_report.pdf
    • https://cdn.shopify.com/s/files/1/0429/2355/7030/files/gewaxuvubaxurikejawu.pdf
    • https://cdn.shopify.com/s/files/1/0433/8951/7973/files/wodadakudo.pdf
    • https://cdn.shopify.com/s/files/1/0428/1620/9059/files/81458337329.pdf
    • https://cdn.shopify.com/s/files/1/0433/5570/1398/files/ganiwusu.pdf
    • https://cdn.shopify.com/s/files/1/0431/0895/8362/files/78916257175.pdf
    • https://cdn.shopify.com/s/files/1/0431/2681/6932/files/69059688700.pdf
    • https://cdn.shopify.com/s/files/1/0431/1823/1709/files/61931288559.pdf
    • https://cdn.shopify.com/s/files/1/0431/6259/9585/files/97956650272.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_off00005fb1.bin
9a91b9e04ee13c1e5a5a31c2d2210a0970f3bbdae65937feffe0f7fc748b156f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FB1 5912 bytes
font_01_sfnt_off000073ad.bin
bf19b284583e304a5a21c3650aaea407d255b57932cec1316d054cd366008936		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73AD 9844 bytes

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