Malicious PDF — malware analysis report

Static analysis result for SHA-256 0af408453674ba19…

MALICIOUS

PDF

73.8 KB Created: 2021-02-25 16:37:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 1456c4fb707c5d4b6a291bd953f080ae SHA-1: 7ba3d426f528b95048594d9ba796f358f9115ce5 SHA-256: 0af408453674ba190c8cae5eadfb398b939252dd6308ebb9d37ffff5858e521b
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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 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.
  • 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://crophysi.ru/award?keyword=what+jobs+can+i+get+with+a+ccna+certification In PDF document text
    • http://yeswins.space/97910057952xbdym.pdfIn PDF document text
    • http://tipofeliluget.medianewsonline.com/why_is_the_gnostic_theology_rejected.pdfIn PDF document text
    • http://idclick.cash/kitatixezajuvokexyfgy.pdfIn PDF document text
    • http://hotloveme.online/losixufogeerlzl.pdfIn PDF document text
    • http://lnstagram-helping.live/juxasujadaezfr.pdfIn PDF document text
    • http://simkosa.website/ncees_pe_exam_promo_codezzlib.pdfIn PDF document text
    • http://xozonline.ru/how_to_learn_photoshop_cs345vob.pdfIn PDF document text
    • http://iglivesupportteam.com/kenworth_cab_air_bagkxexd.pdfIn PDF document text
    • http://nageramuvepom.mywebcommunity.org/learn_english_speaking_for_beginners_youtube.pdfIn PDF document text
    • http://watertea.space/star_wars_edge_of_empire_character_creatorc5iyd.pdfIn PDF document text
    • http://rimka.xyz/divisibility_rules_worksheet_math_aids20iz9.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/wukevirenesu/what_is_kafkas_message_in_the_metamorphosis.pdfIn PDF document text
    • https://s3.amazonaws.com/jukoxisojow/bayesian_methods_for_data_analysis_solutions_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/jesidofefe/xatododakewo.pdfIn PDF document text
    • http://rukukuwozar.epizy.com/judoxex.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_off0000e419.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE419 5432 bytes
SHA-256: 1e811b6e24ece4da294a7d0c6ce24453c60e5a190f63bea625914b972a76ce36
font_01_sfnt_off0000f6aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6AA 10412 bytes
SHA-256: 2c64011f957c116f412ea8e5c579868fa6231fccdfc98ed40cfe10a3d089d227