Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d569b31525ef862…

MALICIOUS

PDF

45.1 KB Created: 2020-08-13 23:38:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4af60c172d451d1bc13d6d12f9039899 SHA-1: 260d7f69a167b9139bbab28ea08b69effcf515e9 SHA-256: 6d569b31525ef862fdbed8bb709222600bf7a655dbb42345c0f5c1933ba9f217
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains a lure related to unclaimed property and embeds numerous links, with one specifically pointing to known malicious redirector infrastructure. This indicates an attempt to trick users into visiting malicious sites, likely for an advance-fee scam. The ML classifier strongly supports the malicious verdict.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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.ru/pify?keyword=unclaimed+property+new+jersey+reporting
    • http://piwowen.canberrabirthservices.com/uploads/1/3/1/6/131636725/vasinujufapane-wegipenofa-xezani.pdf
    • http://files.davidhahnonline.com/uploads/1/3/1/1/131164067/rasizufen.pdf
    • http://files.bathcantatagroup.co.uk/uploads/1/3/0/9/130970014/mubororupat.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/5411/2672/files/87291611520.pdf
    • https://cdn.shopify.com/s/files/1/0431/0673/0144/files/42329725782.pdf
    • https://cdn.shopify.com/s/files/1/0437/3594/1274/files/redifeselamekipivexij.pdf
    • https://cdn.shopify.com/s/files/1/0438/5452/8677/files/redomajosojif.pdf
    • https://cdn.shopify.com/s/files/1/0434/1802/6141/files/2827807046.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zukukujumifuxutage.pdf
    • https://cdn.shopify.com/s/files/1/0431/5440/7578/files/39253949672.pdf
    • https://cdn.shopify.com/s/files/1/0451/1550/6853/files/40360082047.pdf
    • https://cdn.shopify.com/s/files/1/0432/2702/1480/files/gaxazipusebij.pdf
    • https://cdn.shopify.com/s/files/1/0432/2318/7618/files/40222064857.pdf
    • https://cdn.shopify.com/s/files/1/0431/8534/0580/files/tevemegizujutobizif.pdf
    • https://cdn.shopify.com/s/files/1/0444/8750/8135/files/ansi_b16_5_flange_dimensions_in_mm.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_off00006ff5.bin
813f2009170a65d55a09f8caa0c4ac413914218c9dc58923eee337c6b7d63552		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FF5 5656 bytes
font_01_sfnt_off00008325.bin
5ea0be814e23e0d92a5582194b4e02ad45e9072077ebf7f7ad7779d9d8ffda8c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8325 10444 bytes

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