Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fc67d6306c29b19…

MALICIOUS

PDF

77.3 KB Created: 2021-03-16 19:30:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 9c110e0423ed980f552e486b6fad16e8 SHA-1: de2c7a314e1e98fa88d9c00ceb22be6e2edfc0f7 SHA-256: 1fc67d6306c29b195843169756f90ff9331e91134889c539e77684fa6e968e66
126 Risk Score

Malware Insights

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

The PDF contains embedded URLs and heuristics indicate it is a link farm on disposable hosting, designed to redirect users to external sites. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware delivery. The document body, though heavily obfuscated, contains text related to 'community service hours', aligning with the malicious URL's keyword.

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://jumiwimov.ru/wix?keyword=can+you+fake+community+service+hours+for+school PDF link annotation
    • http://towufato.mywebcommunity.org/reliabilt_french_doors_installation_instructions.pdfIn PDF document text
    • http://wonder-ita.fun/vet_technician_training_near_mer0w9o.pdfIn PDF document text
    • http://worabipupe.mypressonline.com/shark_navigator_vacuum_repair_near_me.pdfIn PDF document text
    • http://tb-films.ru/wakokajanudovetufososiqglog.pdfIn PDF document text
    • http://persequenteamsohbet.com/zutulotesupekofy5k.pdfIn PDF document text
    • http://gomijojupi.iblogger.org/how_champions_think_in_sports_and_in_life.pdfIn PDF document text
    • http://larebalin.mypressonline.com/nefarapexiveke.pdfIn PDF document text
    • http://opendouche.xyz/xarefevez1onla.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/jiwotarotavuz/22909102851.pdfIn PDF document text
    • https://s3.amazonaws.com/fedufiporara/71329925345.pdfIn PDF document text
    • https://s3.amazonaws.com/firudegix/57345223411.pdfIn PDF document text
    • https://26577e91-18e8-42c3-8e85-49dcca1d6605.filesusr.com/ugd/195787_ac0b151ed6404046afa399bcc1aadab1.pdf?index=trueIn PDF document text
    • https://3fb740b9-71d8-4183-8edb-de11b68c0a29.filesusr.com/ugd/1fbf8b_321906354aa145cf940478ac1932e2a5.pdf?index=trueIn PDF document text
    • https://4a5660cc-52a2-48ff-9acb-4b4f1704cb6e.filesusr.com/ugd/81868d_6dcc8d45ae894dbf8718e2a081c390bd.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/panalipolifod/zaripuxogogewogod.pdfIn PDF document text
    • https://s3.amazonaws.com/jikopot/beatles_revolver_mono.pdfIn PDF document text
    • https://849bdae7-2456-4570-9e2a-fc769e7e49ad.filesusr.com/ugd/2074c9_bf839ded04f240ca840d04bd0bbeb59e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wobuzisibal/87373612448.pdfIn PDF document text
    • http://selumaruba.epizy.com/puzzles_and_dragons_beginner_s_guide.pdfIn PDF document text
    • http://kebenubes.onlinewebshop.net/how_to_lose_weight_fast_challenge.pdfIn PDF document text
    • http://wepelefil.rf.gd/how_to_calculate_the_perimeter_of_a_compound_shape.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_off0000f1e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1E6 5252 bytes
SHA-256: 85a74cfee5e26360d96678f90c21e53d2d253c76d26a6e6fe54bd6d2e28cf6bf
font_01_sfnt_off000103aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103AA 10488 bytes
SHA-256: f651379bb9cd5b2ad343190004c0a194e7f795b72b0ce0d3c09025965f2c024f

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