Malicious PDF — malware analysis report

Static analysis result for SHA-256 03f79dea51cf1018…

MALICIOUS

PDF

96.3 KB Created: 2021-02-28 02:24:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 6ae9843d53067b0ead5020287fd47fea SHA-1: 1b0c57818ca65d33772530359872c5b2e5102e94 SHA-256: 03f79dea51cf1018fe6d953965a9306e71f2cc830954dffc7b35e983f79dda0b
126 Risk Score

Malware Insights

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

The file was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. It contains numerous embedded URLs, many pointing to disposable hosting or link farms, suggesting an attempt to redirect users to malicious sites. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic specifically identifies it as a link farm on disposable hosting, reinforcing the phishing or malware distribution intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://zajinet.ru/award?keyword=star+trek+voyager+elite+force+2+weapons PDF link annotation
    • https://merugerizun.weebly.com/uploads/1/3/4/3/134337850/saxoxesixit_togetute.pdfIn PDF document text
    • http://tikenifoziv.22web.org/2016_buick_verano_service_manual.pdfIn PDF document text
    • http://streamsweets.com/nitiwosupapu1p6ac.pdfIn PDF document text
    • https://cdn.sqhk.co/zedazisem/CtSj4ia/fobajibebix.pdfIn PDF document text
    • https://xigujevaw.weebly.com/uploads/1/3/4/7/134701692/woded.pdfIn PDF document text
    • https://cdn.sqhk.co/nakijalufiw/igGYOjh/dotifopakebozidijud.pdfIn PDF document text
    • http://jusukigib.sportsontheweb.net/i_pace_max_charge_speed.pdfIn PDF document text
    • https://saranadizalexe.weebly.com/uploads/1/3/0/9/130969301/zumibufadelu-todebopuwodazan.pdfIn PDF document text
    • https://mudepazenanaj.weebly.com/uploads/1/3/4/7/134765609/wejosupol.pdfIn PDF document text
    • https://cdn.sqhk.co/fokofike/xjeidgi/59571619850.pdfIn PDF document text
    • http://nibumuxadata.66ghz.com/meaning_and_purpose_at_work_report.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://vejegaba.atwebpages.com/pride_and_prejudice_movie_2005_soundtrack.pdfIn PDF document text
    • http://fubavinexazixo.onlinewebshop.net/4th_grade_math_games_jeopardy.pdfIn PDF document text
    • http://pudolajuji.atwebpages.com/emergency_medicine_physician_salary_washington_state.pdfIn PDF document text
    • https://s3.amazonaws.com/gimisorixosu/free_brain_teasers_for_adults_with_answers.pdfIn PDF document text
    • http://beverotunege.epizy.com/asoftech_auto_typer.pdfIn PDF document text
    • https://s3.amazonaws.com/suzujewa/xigimabevujisewibabivexak.pdfIn PDF document text
    • http://pevukotexape.rf.gd/mewoxavowut.pdfIn PDF document text
    • http://duxegejuw.atwebpages.com/43897812759.pdfIn PDF document text
    • http://punejiva.epizy.com/pimobegufa.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_off00012ce5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12CE5 5524 bytes
SHA-256: 883f47909c23b2793fa016b6eae2d7f3e4d48e6b2178cb9ff79e18d36dcc240a
font_01_sfnt_off00013fd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13FD6 11100 bytes
SHA-256: 9a013da40c3e59e926e75e3ef59e9b388f61147ea4de8bf118259a24c70f6e4b
font_02_sfnt_off00016587.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16587 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

Open this report in the interactive analyzer, or submit your own file for analysis.