Malicious PDF — malware analysis report

Static analysis result for SHA-256 82e41c0414ebb9b2…

MALICIOUS

PDF

68.1 KB Created: 2021-03-06 05:15:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 25be956255257d16ee502105d1a213a6 SHA-1: 45377fbe12b029c1c3efe19e43ffdda698bb3885 SHA-256: 82e41c0414ebb9b28c87eab45a8f1c5220dae0c71bf7a6772928850af8594c15
124 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document body and heuristics reveal a large number of embedded URLs pointing to various domains, suggesting a link farm or phishing campaign. The presence of PDF_SEO_DISPOSABLE_LINK_FARM heuristic further supports this, indicating the document is designed to distribute links via disposable hosting. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8294

Heuristics 4

  • 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
  • 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://crophysi.ru/award?keyword=are+bulova+watches+valuable PDF link annotation
    • https://cdn.sqhk.co/kawurefeki/jgnJhjh/adderall_xr_dosage_for_8_year_old.pdfIn PDF document text
    • https://cdn.sqhk.co/duxevowoli/5jiWwgh/kaxutobuvudaw.pdfIn PDF document text
    • http://dorightunion.com/618119125234dvhm.pdfIn PDF document text
    • http://prizinsta24.online/79636395852c04em.pdfIn PDF document text
    • https://cdn.sqhk.co/bitijude/jgjhMkF/download_game_supermarket_mania_journey_pc.pdfIn PDF document text
    • https://rafinavogeseb.weebly.com/uploads/1/3/5/9/135987446/8789a947a5fc7b.pdfIn PDF document text
    • http://anbieterbewertung-autoscoutch.com/barredora_manual_escoba_magicaeiwpy.pdfIn PDF document text
    • http://nimuxixoxa.22web.org/kenwood_ddx419bt_price.pdfIn PDF document text
    • http://gdztut.com/70807235999tvij.pdfIn PDF document text
    • https://napajudiweji.weebly.com/uploads/1/3/4/3/134316113/4901147.pdfIn PDF document text
    • https://womomoko.weebly.com/uploads/1/3/4/8/134848640/zozibubokixi_fizugimunez_rosapefe_parotif.pdfIn PDF document text
    • http://axecheat8.xyz/madulixasxxjo2.pdfIn PDF document text
    • http://thedefenseforge.com/mental_status_exam_formge3ge.pdfIn PDF document text
    • https://wipowoniwosixad.weebly.com/uploads/1/3/0/7/130740259/jinirifu_kaloramizetuwi_kasewofuvil.pdfIn PDF document text
    • https://cdn.sqhk.co/sizozizaj/hajgkge/99758397485.pdfIn PDF document text
    • http://razvivatel.blog/osmosis_jones_questions_and_answerswvyhu.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/numegubowalonan/84786367637.pdfIn PDF document text
    • http://vebaxabono.epizy.com/ruxurevemexulonilapitugek.pdfIn PDF document text
    • https://s3.amazonaws.com/gopuze/9981026638.pdfIn PDF document text
    • https://s3.amazonaws.com/fifuto/covering_letter_template_australia.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED95 5168 bytes
SHA-256: 4abc9930e385fbf501219befbd8012cf90f71e6cbf680fdc4d967a017e23fd83

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