Malicious PDF — malware analysis report

Static analysis result for SHA-256 9567d7e1d20d02b2…

MALICIOUS

PDF

76.8 KB Created: 2021-03-21 09:17:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: a9b2cff29fcf213226fd6dac53a964c1 SHA-1: 9ff1d75507d14aa6a017f833993a6fcc4d19e02e SHA-256: 9567d7e1d20d02b28e691f4234d738eac3e65a76a6de857786bc4b6390795dda
194 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or SEO spam operation. The document body, though partially corrupted, contains keywords related to 'Blake printing supply contact', likely a lure to direct users to malicious or spam websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 7

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://nipisod.ru/wix?keyword=blake+printing+supply+contact PDF link annotation
    • https://cdn.sqhk.co/juxezijafoz/hGhi0gi/90955008989.pdfIn PDF document text
    • https://cdn.sqhk.co/tosobulig/KAjfjfm/pnm_pure_nintendo_magazine.pdfIn PDF document text
    • https://cdn.sqhk.co/gadukupuwe/b8gjhfg/59794033399.pdfIn PDF document text
    • https://cdn.sqhk.co/tudobele/jiclSii/kixok.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465142/normal_5feb8323500c7.pdfIn PDF document text
    • https://cdn.sqhk.co/raxuzuvuluf/EZhhFd2/child_development_learning_domains.pdfIn PDF document text
    • https://cdn.sqhk.co/joxesinejag/SOmjg61/connecticut_natural_gas_login.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490528/normal_600ca44f3cf8a.pdfIn PDF document text
    • https://cdn.sqhk.co/mafowixodi/LgeNuge/sowes.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369183/normal_604040405e320.pdfIn PDF document text
    • https://cdn.sqhk.co/gitesafuwu/0igjjEf/best_free_open_world_games_ps4.pdfIn PDF document text
    • https://cdn.sqhk.co/jitamoxi/hdghjgd/augmented_reality_app_development_tutorial.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://30383b9b-b26a-44f4-9a26-03873af8f03c.filesusr.com/ugd/fdee49_c0422027203b497885e6d4f04d4f291c.pdf?index=trueIn PDF document text
    • http://safedoguno.onlinewebshop.net/permenkes_46_tahun_2020_akreditasi_puskesmas.pdfIn PDF document text
    • https://c580675e-8888-491d-8c80-3106eaac86fb.filesusr.com/ugd/c8a981_dd196d191c734091a1d253a2204748a9.pdf?index=trueIn PDF document text
    • http://tapoloferazuziw.atwebpages.com/what_is_the_definition_of_a_guardian_ad_litem.pdfIn PDF document text
    • https://1f2f8e77-98df-4c5e-b88a-83bc2b612b58.filesusr.com/ugd/5c7528_4932acea12a14abdb5ae064405b2ff71.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/sumesawoxajew/1449619617.pdfIn PDF document text
    • https://91ca87c2-c493-4616-adaa-fbcec45394e1.filesusr.com/ugd/6116da_506a2c9404e64c6a896b00b83ce95230.pdf?index=trueIn PDF document text
    • https://56a7be67-7dca-40da-a973-69ad719fb73b.filesusr.com/ugd/fedf23_d6c2619049f748259c2df55a54516d16.pdf?index=trueIn PDF document text
    • http://bolirazebaf.myartsonline.com/19068000572.pdfIn PDF document text
    • https://s3.amazonaws.com/risalenefazozo/nekimisijafefagila.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_off0000ede2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDE2 5316 bytes
SHA-256: c4b9cf0dbfd30c63818c55a34d08838493c8e66ff12f09f1ec45984f6ac083e7
font_01_sfnt_off00010014.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10014 11096 bytes
SHA-256: 61c38c37ee304e67e68d9602d755ac4fe5e64d722893243daa7dd220461f2f7f