Malicious PDF — malware analysis report

Static analysis result for SHA-256 17898003d1b16d28…

MALICIOUS

PDF

43.5 KB Created: 2020-08-23 18:44:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 52c4c3e6021c1ed75a64cd92a0ccfdd3 SHA-1: 180d065f7ce9a0fc099f264b19da9bb7c8ffc9a3 SHA-256: 17898003d1b16d287f3bd7e2b2998c2c9ab20a996fad01728acc2a4e93fc927e
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one identified as a malicious redirector. The heuristic 'SE_ADVANCE_FEE_SCAM_LURE' strongly suggests the document's purpose is to trick users into engaging in a fraudulent transaction. The presence of a link to 'ttraff.ru' further supports the malicious intent by pointing to known malicious infrastructure.

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=codycross+answers+group+24+puzzle+3
    • http://xilaw.maskcarabeautycolormatchgina.com/uploads/1/3/0/7/130739688/wotafuloleluf.pdf
    • http://files.isamurats.co.uk/uploads/1/3/2/6/132680986/pebaja.pdf
    • http://files.mariposacelebrations-eventmanagement.com/uploads/1/3/0/8/130873822/nodumikoxum-mozarisizu-gitin-vuxadi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/0549/2904/files/49814502304.pdf
    • https://cdn.shopify.com/s/files/1/0433/2696/3865/files/digital_communication_proakis_5th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0430/5004/1495/files/54141749420.pdf
    • https://cdn.shopify.com/s/files/1/0431/1531/5349/files/bizid.pdf
    • https://cdn.shopify.com/s/files/1/0429/5468/6617/files/81665690257.pdf
    • https://cdn.shopify.com/s/files/1/0451/2923/6634/files/bengali_to_english_translation_file.pdf
    • https://cdn.shopify.com/s/files/1/0430/7599/3764/files/65458426399.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_off00006b0c.bin
961aed4583c2e2e879967998a56a72d39f9396a63b1af55c87bae0a6a7c10751
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B0C 5772 bytes
font_01_sfnt_off00007ef2.bin
d13c5565dfe9b907ea5b5dfa0528722ba757b512aad7cb2a7962ff311534896b
pdf-font-stream PDF embedded font (sfnt) at offset 0x7EF2 10192 bytes