Malicious PDF — malware analysis report

Static analysis result for SHA-256 69d08c4d699c8c2d…

MALICIOUS

PDF

76.9 KB Created: 2021-03-18 03:10:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 2189e21e3754df1532005b205accc9a0 SHA-1: 2877a9bf62d466027a0f14fd89b23a6603ff9d8f SHA-256: 69d08c4d699c8c2d22b336f7bf80728b4957512bfe468491576e33fd979f55dc
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with one specifically identified as an external URI pointing to a suspicious domain. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The document body, though heavily obfuscated, appears to be a lure related to an essay title, directing users to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://xajibur.ru/award?keyword=baudelaire+the+painter+of+modern+life+and+other+essays+pdf PDF link annotation
    • http://grizhoff.ru/yamaha_rxv373_wont_power_onba941.pdfIn PDF document text
    • https://leloturopuroka.weebly.com/uploads/1/3/5/9/135956930/fe57527e9.pdfIn PDF document text
    • https://cdn.sqhk.co/lexelinowe/bkfmDKR/71375943615.pdfIn PDF document text
    • http://calipshatngaccs1.xyz/what_does_rational_religion_mean_in_researchoe58d.pdfIn PDF document text
    • https://wegolabama.weebly.com/uploads/1/3/4/5/134511146/76ff09.pdfIn PDF document text
    • http://pakavoposot.22web.org/palmetto_credit_balance_report_phone_number.pdfIn PDF document text
    • https://cdn.sqhk.co/pufuxogife/Whiic3D/98344237426.pdfIn PDF document text
    • https://cdn.sqhk.co/faserekino/ojdhgjg/98043495155.pdfIn PDF document text
    • https://bewepuxajijasi.weebly.com/uploads/1/3/4/3/134362307/2464371.pdfIn PDF document text
    • https://cdn.sqhk.co/vovomafejuwa/a94aVV6/budojusanetidilefi.pdfIn PDF document text
    • https://pobejatu.weebly.com/uploads/1/3/2/7/132741278/6ecda.pdfIn PDF document text
    • https://cdn.sqhk.co/bonosexov/haa4bqU/class_9th_science_ncert_book_solutions_chapter_2.pdfIn PDF document text
    • https://cdn.sqhk.co/terasovo/fidgiFi/30371389503.pdfIn PDF document text
    • http://xenuven.22web.org/wedding_hairstyles_video.pdfIn PDF document text
    • https://cdn.sqhk.co/moradivovep/18chcje/podufavemawu.pdfIn PDF document text
    • https://xateboduf.weebly.com/uploads/1/3/1/4/131483383/1921728.pdfIn PDF document text
    • http://jopimutedu.iblogger.org/crusader_kings_2_best_starting_traits.pdfIn PDF document text
    • http://cosmicgig.com/602890005qwxwf.pdfIn PDF document text
    • http://naykaryadom.fun/uber_driver_dayton_ohio1kl3q.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jiporiri.rf.gd/viwokuge.pdfIn PDF document text
    • http://zisajas.epizy.com/high_school_testing_coordinator_job_description.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/16ae168f-b683-451b-9a8a-79d9826d7d78/gemet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/15f9140f-2c2e-4a9c-a60c-9dd60c6bb581/dunezitamo.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d845.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD845 5848 bytes
SHA-256: 13af3f353a183810091d3cd6b3b0ea7232a4947b49581a19cf8e2cb478dadc57
font_01_sfnt_off0000ec98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC98 5432 bytes
SHA-256: e469aa57c0ad013dd084b0081184da3ed94dbc1881060869872af9a09d7bd55e
font_02_sfnt_off0000fef1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEF1 10628 bytes
SHA-256: c3c92da506ea3eabe8c9e0a58a3dcd7f4a6e7e6f00408e23863af182d0650860

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