Malicious PDF — malware analysis report

Static analysis result for SHA-256 986e549a374f13b0…

MALICIOUS

PDF

82.5 KB Created: 2021-04-03 16:41:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 728e67a2c39a2e5e8e7c59838d9f73d8 SHA-1: 53924dba813eafbbaf61c03a17fea842773386a3 SHA-256: 986e549a374f13b0d839f6b7e3a07806d3f257e7359e46ee6cbe8c22ac732f98
126 Risk Score

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 0.9993

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://baarspo.ru/strik?utm_term=aqua+tech+5-15+instruction+manual PDF link annotation
    • http://fejuxit.iblogger.org/dream_interpretation_of_dead_mother.pdfIn PDF document text
    • https://cdn.sqhk.co/vakiduju/iejetif/pexatugejomekigifam.pdfIn PDF document text
    • http://zisuwunoze.22web.org/66717925070.pdfIn PDF document text
    • https://cdn.sqhk.co/rewanizotaj/ic9hab0/xoriziz.pdfIn PDF document text
    • https://cdn.sqhk.co/sukurorezib/ifSjbif/advertising_agency_jobs_miami.pdfIn PDF document text
    • https://cdn.sqhk.co/miraroki/gdihG7H/4535795615.pdfIn PDF document text
    • https://cdn.sqhk.co/fifunolew/ij2ggid/guardians_of_ancora_app.pdfIn PDF document text
    • http://sixobenuzapezi.iblogger.org/hoover_floormate_deluxe_hard_floor_cleaner_wet_dry_vacuum_fh40160pc.pdfIn PDF document text
    • http://pogumuwoma.iblogger.org/kadesuremivapazer.pdfIn PDF document text
    • https://cdn.sqhk.co/wuladupuzo/Xussjap/masimuwokudorome.pdfIn PDF document text
    • https://cdn.sqhk.co/ketusugedi/gghfKjb/lenovo_ideapad_330_specs.pdfIn PDF document text
    • http://zitekimuzefovar.iblogger.org/vetivezivi.pdfIn PDF document text
    • https://cdn.sqhk.co/lenawemijixe/PB0iavk/xurojojijapadirifofoje.pdfIn PDF document text
    • http://vojamugoju.22web.org/baminafolibewirekeniru.pdfIn PDF document text
    • https://cdn.sqhk.co/pifitudebuxo/giYvajf/zombie_shooter_2020_3d_shooting_survival_warfare.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/bupesejirijejus/98924394163.pdfIn PDF document text
    • http://poxaxedezof.epizy.com/strategic_management_by_fred_r_david_16th_edition_free_download.pdfIn PDF document text
    • http://nerelikeg.epizy.com/88985104108.pdfIn PDF document text
    • http://mesobuze.epizy.com/falixaz.pdfIn PDF document text
    • https://s3.amazonaws.com/mulerux/arduino_uno_rev_3_datasheet.pdfIn PDF document text
    • http://daripesobad.epizy.com/arauco_mdf_catalogo_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/wexoteluwag/cat_s_eye_margaret_atwood_free.pdfIn PDF document text
    • http://mutaluwuvekigo.rf.gd/aussie_slang_words.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_off00010195.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10195 5360 bytes
SHA-256: 8d97c31b5af5081bdffc0c17fe06f21bd9b20f89e41831c1c8c42f0308a46b61
font_01_sfnt_off000113b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113B5 11584 bytes
SHA-256: 5a66856b8ef3d5f020ca80f13228b1c467827a3bbdfbd339b04ecd6ca5d08846

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