Malicious PDF — malware analysis report

Static analysis result for SHA-256 899908fa037fc3f6…

MALICIOUS

PDF

79.3 KB Created: 2021-06-01 20:10:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 254779c1951df2ba4c0396f7d607b7d7 SHA-1: 2cc4a7c31101851a36e76cd76e3b5d04a102d274 SHA-256: 899908fa037fc3f6ffb7b98f51dff3dfed048618def2cf65be41ee2ebd5d9098
196 Risk Score

Malware Insights

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

The PDF file contains numerous external links, including a redirector URL that appears to be part of a phishing or scam campaign. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, contains references to software and a date, suggesting a lure to download or access something.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://garglob.ru/pbw?utm_term=how+to+get+garageband+on+windows+10 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4459628/normal_5fcc5de8c9949.pdfIn PDF document text
    • https://zagozejidenadap.weebly.com/uploads/1/3/1/4/131407028/vexilugiv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411915/normal_60644dad88ec5.pdfIn PDF document text
    • https://bizokotipalan.weebly.com/uploads/1/3/4/7/134771030/kusewomaluwu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418184/normal_6067da7884e30.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464852/normal_5ffac43314a09.pdfIn PDF document text
    • https://bizutimuja.weebly.com/uploads/1/3/3/9/133999747/1295580.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373264/normal_602ef370beb99.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/d6dbbf37-f716-417c-baf8-44459260344e/resumen_del_libro_continuidad_de_los_parques_julio_cortazar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90a9f1c2-efa4-4872-83fb-dd10cac34ae5/tupigatavoretokasazakago.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4105d97-1160-42e2-b5b9-4bfca527be5a/citizen_chronograph_wr100_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0425cb5-5aa9-4244-9ccb-0b50c29d3ba6/72965579274.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec6df3e4-2c02-4372-a598-2fd5a6d796e2/active_and_passive_voice_worksheet_6th_grade.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62e95e8c-f684-4650-920b-ef90a135ac37/zudexiketipawebozoxovokok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2d1fc25-10da-48d2-8ab0-b68c9444c0c6/94506684620.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59a5494d-4431-4658-b05f-ed7df510ac60/gotapibixoxawijo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7f296ca-c291-4a5e-91ec-e65ecd4a8aa9/drawing_involute_gear_teeth_in_solidworks.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/898f4ea4-7904-427f-9a57-8dee174e81ce/how_to_program_a_digital_tv_converter_box.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_off0000f716.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF716 5348 bytes
SHA-256: 5bf698c963ed7a2bd696200fc5dd5ba745fd0555e3481c939a7453c95040c3ad
font_01_sfnt_off00010965.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10965 10824 bytes
SHA-256: 7b37904893a784f2978726d956a6292679561cb3c890de93b95d473496faf519