Malicious PDF — malware analysis report

Static analysis result for SHA-256 b17a6e599bbea6b0…

MALICIOUS

PDF

80.8 KB Created: 2021-05-18 14:43:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13
MD5: c2856c0027781202eae4654d476e73ce SHA-1: afd578b0deb141bb15782c4a356e5c8443f712e5 SHA-256: b17a6e599bbea6b00e3c0ff02c29d01ab4842f07fd5ad245be08744ede8b5280
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The embedded URLs and the document's structure suggest it is part of a phishing campaign, likely attempting to redirect users to malicious content or download further malware. The presence of numerous links to disposable hosting and link farms reinforces this assessment.

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://soxebez.ru/strik?utm_term=avengers+tamil+movie+download+tamilrockers+2019 PDF link annotation
    • http://tuvolabuzibode.iblogger.org/34297546208.pdfIn PDF document text
    • http://mozejuvedum.22web.org/annotating_a_text.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ad01677-598b-4530-a591-531354a01f1a/51909328718.pdfIn PDF document text
    • http://wenepebizitiwoz.rf.gd/problemas_educativos_en_mexico_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6ee0e0f-13d0-4da5-9390-d6d785a35421/sojanituwebog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/156b8301-91b9-4d6a-872d-80f8c00d907e/41734761185.pdfIn PDF document text
    • http://sedegagagojuwej.epizy.com/49829941744.pdfIn PDF document text
    • http://revipaziwu.epizy.com/danigepefanoxoj.pdfIn PDF document text
    • http://rojugukilajix.epizy.com/node_axios_file.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/13b06a83-6937-4a60-8213-09b3ec0f4236/how_to_turn_on_my_comcast_cable_box.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be2a7f31-c80d-47fc-b30e-a3168c04129b/91689309685.pdfIn PDF document text
    • http://siwojanapav.epizy.com/kuvotegolo.pdfIn PDF document text
    • http://ledivalefinaba.rf.gd/moonshot_the_indigenous_comics_collection_volume_1.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/193f0563-0b34-4789-8c0f-948a21c2795e/hp_officejet_6500a_plus_printhead_alignment_failed.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/79d72022-c23e-43e4-a8c9-3c8fd4a67f34/bidoritevixatimar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5176a5c2-87fb-4df9-ae0b-2d893972168f/bikesa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa058aa7-31a5-4b9e-a659-f3df4a3bea73/tuxanegigenano.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5bf86b13-7f1b-4328-b098-53e90717a8ee/data_science_major_requirements_uw_madison.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b35306ca-43af-47cf-87c4-7ddc78e33d00/zimezo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2d99738-ff7f-4426-8793-0601fad6862c/86865276179.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6168ce73-d417-43c9-b5ca-31f2b8fb83de/2002_explorer_starter_solenoid_location.pdfIn PDF document text
    • http://pogudex.epizy.com/adib_logo.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_off0000fad7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAD7 5944 bytes
SHA-256: d2d41d8aff4a2aed2694b773fb94c9bdbc9fc8a123c9e596fc56fd5e18d472a4
font_01_sfnt_off00010f1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F1E 11368 bytes
SHA-256: 908d38de6240b604d51679aeee10be2e0ce3cd4cd23383995696d11a12e0653a

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