Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a87d2d5282d1047…

MALICIOUS

PDF

48.0 KB Created: 2020-11-09 14:30:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2ecbc7a5b2eea0c7de5575461571cddc SHA-1: d6f00a29456f5571d4a7deaa0bf30f70066490ce SHA-256: 3a87d2d5282d10478a8207b40d2e7cb37fe368f7d00dd7886ff54e081098e9fa
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic, suggesting an attempt to manipulate search engine rankings or redirect users to potentially malicious sites. The primary URL observed is 'https://traffking.ru/123?keyword=it+started+with+a+kiss+drama', which is likely part of this link farm. No scripts were extracted, but the sheer volume of outbound links indicates a malicious intent to direct traffic elsewhere.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffking.ru/123?keyword=it+started+with+a+kiss+drama
    • https://vewutaniwem.weebly.com/uploads/1/3/0/8/130873717/zimetiw-xipaveruxo-gogivimu-dewud.pdf
    • https://cdn-cms.f-static.net/uploads/4368770/normal_5fa4a467a781a.pdf
    • https://cdn-cms.f-static.net/uploads/4391642/normal_5f8ec27bf0938.pdf
    • https://kileligujet.weebly.com/uploads/1/3/4/4/134457719/depunokaposobax.pdf
    • https://cdn-cms.f-static.net/uploads/4366976/normal_5f895faec144b.pdf
    • https://vodexekuteb.weebly.com/uploads/1/3/0/7/130776001/18c886d3b1f6351.pdf
    • https://cdn-cms.f-static.net/uploads/4388421/normal_5f9a3f73a7e64.pdf
    • https://rawamujorutemet.weebly.com/uploads/1/3/4/3/134360263/vimafo.pdf
    • https://pasutexovemas.weebly.com/uploads/1/3/0/9/130969198/bijopivumunefo-tewafitudisino.pdf
    • https://cdn-cms.f-static.net/uploads/4408707/normal_5fa5d638b1f0d.pdf
    • https://lodirunesu.weebly.com/uploads/1/3/0/8/130874391/pukanekixijef_paxar.pdf
    • https://kuvofexe.weebly.com/uploads/1/3/1/1/131163751/fejuxi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/jutenojamega/candace_newmaker_transcript.pdf
    • https://s3.amazonaws.com/degagaziv/courtage_direct_banque_nationale_ouverture_de_compte.pdf
    • https://uploads.strikinglycdn.com/files/22f3224d-957a-4b65-939e-73292fa12ca9/mitsubishi_colt_cz3_service_manual.pdf
    • https://s3.amazonaws.com/zepifudoxapo/taxonomia_de_bivalvos.pdf
    • https://uploads.strikinglycdn.com/files/ca55c6fb-6fa0-4233-8dde-24cd67546b37/troy_bilt_horse_parts_manual.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000067d3.bin
f502d290db63120a7e89bf61aa847b4edf0dc5d83d8506627ef3131893aa246d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67D3 5128 bytes
font_01_sfnt_off00007927.bin
17429db51b58282d0312f967e96e9b5163a3fd993b67a8496d8b4a7e54ccd053		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7927 10672 bytes
font_02_sfnt_off00009dda.bin
71fec8a3adfe41455811528c654ef740a0d97889ddd19e39e153b04b7507b7f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9DDA 16160 bytes

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