Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d0b16a8471e4045…

MALICIOUS

PDF

73.1 KB Created: 2021-02-10 09:19:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: b51718dfe1257a626cb52164b4131061 SHA-1: f4637385db271e1c5795ad3a95b0d7c547af455a SHA-256: 2d0b16a8471e40456bc61f4e94a93c8e8fb2df0c941da0f8ec464360a0af070c
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://jottigo.ru/123?utm_term=alpine+cde-hd149bt+manual PDF link annotation
    • http://ita-fitness.fun/merifibepezanesebebamb0xaq.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387035/normal_5fc85f639d6e4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384144/normal_5ff1af724f129.pdfIn PDF document text
    • http://copytoshka.ru/5697921437bn462.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379384/normal_601736e3eea53.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376101/normal_5fdb7c8f773a5.pdfIn PDF document text
    • http://lavka-karamel.ru/zemoberesazuikvp8.pdfIn PDF document text
    • http://rorureferujuraf.22web.org/drivers_ed_texas_final_test_answers.pdfIn PDF document text
    • http://luminar3-download.xyz/plants_vs_zombies_cheats_ps4pmjb8.pdfIn PDF document text
    • http://free-at.pro/19127500273i1me7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tosevud/govuvalepokezimukofolojo.pdfIn PDF document text
    • http://matasup.rf.gd/business_proposal_sample.pdfIn PDF document text
    • http://wijopimitiraze.epizy.com/weather_report_nyc_now.pdfIn PDF document text
    • https://s3.amazonaws.com/wisuw/xawedezawadatotamubebeku.pdfIn PDF document text
    • https://s3.amazonaws.com/voxipanovigepiv/xidogabopetagizalifi.pdfIn PDF document text
    • https://s3.amazonaws.com/kisimujuk/java_8_for_32_bit_windows.pdfIn PDF document text
    • http://fevasakexelima.epizy.com/dokodowinekipojudat.pdfIn PDF document text
    • https://s3.amazonaws.com/jezobasit/96284679968.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000df5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF5D 5496 bytes
SHA-256: 4a82d38bf829b362fafd84b45b1e0c8ced5945960577ecd748964c0f8699efe0
font_01_sfnt_off0000f1ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1EF 11048 bytes
SHA-256: 3dde238937933e443a212870b5ebb270c14c2c3cceccb8d1c443c4315e4d8da4