Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0f5a7867c94e54d…

MALICIOUS

PDF

74.6 KB Created: 2021-04-03 05:14:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 15d131020e513bba5fa18aeb69597ceb SHA-1: b260d7cfc69de53f05a27fbda83d7139b7bf606c SHA-256: f0f5a7867c94e54dbb2795a5cbe6ebaacc1f2be2944aa0ad69d6fe51323ac687
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://maypoin.ru/award?keyword=mathematical+optimization+and+economic+analysis+pdf PDF link annotation
    • https://cdn.sqhk.co/sevijeruba/ugegghe/formula_1_results_yesterday.pdfIn PDF document text
    • http://rexasokozeg.iblogger.org/searching_and_sorting_algorithms_in_c.pdfIn PDF document text
    • https://cdn.sqhk.co/rarirawibowo/hf96BAs/police_chase_right_now.pdfIn PDF document text
    • https://cdn.sqhk.co/kugefiruxat/higgdhc/love_application_download.pdfIn PDF document text
    • http://izzzaaa.space/zufezobodamedodolagapuzyhtbb.pdfIn PDF document text
    • https://cdn.sqhk.co/buwowunuras/ejadZKW/epson_moviemate_72_projector.pdfIn PDF document text
    • https://cdn.sqhk.co/letarezetap/CDWhbqq/bamogapewinifusofenarilog.pdfIn PDF document text
    • http://shoop-fo.ru/anycast_wireless_display_user_manualjb39f.pdfIn PDF document text
    • http://kotumixevana.22web.org/database_benchmarking.pdfIn PDF document text
    • http://bigops.fun/cuanto_es_1_metro_en_pies2mdcv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/1db6ccc5-f411-49bc-a60c-86ff3771bbd6/zombie_apocalypse_survival_guide_max_brooks.pdfIn PDF document text
    • https://s3.amazonaws.com/pazovugal/97432432420.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/544fe1bd-325a-40f5-b41e-8d07ba2672e8/ti_84_plus_ce_charger_cord.pdfIn PDF document text
    • https://s3.amazonaws.com/dujepav/proposal_skripsi_pendidikan_agama_islam_kualitatif.pdfIn PDF document text
    • https://s3.amazonaws.com/jodabiladezot/aambala_2015_full_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/tubupejevomo/sejux.pdfIn PDF document text
    • https://s3.amazonaws.com/towutoginadivu/89768057836.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf8da207-65de-44cb-be16-915bd7b4b4df/weight_watcher_scale_shows_err.pdfIn PDF document text
    • http://repajazofuwide.epizy.com/koxitopofazojitiwi.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e66c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE66C 5456 bytes
SHA-256: 8052c31463cc4f7231e27ca6a74808bd9b3f8749dcb281561dab9a548b017775
font_01_sfnt_off0000f8f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8F9 11564 bytes
SHA-256: 430d64c624afdeb9835010fb6ff1620a4b69a856dbeb0712f404a6d9787a8fef

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