Malicious PDF — malware analysis report

Static analysis result for SHA-256 462093e15fc5e3f5…

MALICIOUS

PDF

73.2 KB Created: 2021-02-24 16:17:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: bbc6e1fd736b2a0e0a291a6114405376 SHA-1: dbb54a577ee24cb06ab0ef244cd69119c240900c SHA-256: 462093e15fc5e3f5e02c48aece13760ff18670e9562af7b6876f9d84bdc067ef
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains multiple embedded URLs, with one specifically pointing to a suspicious domain ('druttle.ru') that is likely used for phishing or malware distribution. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates the PDF is designed as a link farm on disposable hosting, further supporting a malicious intent. ClamAV also detected this file as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://druttle.ru/award?keyword=life+fitness+95ci+upright+bike+reviews PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4368240/normal_601a9d7f3e189.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486367/normal_6031e792a95f2.pdfIn PDF document text
    • http://sakulog.sportsontheweb.net/the_lady_with_the_dog_theme.pdfIn PDF document text
    • https://rosiruwolokixa.weebly.com/uploads/1/3/4/7/134765588/sorux.pdfIn PDF document text
    • http://pofaduxiruk.getenjoyment.net/8843239597.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491437/normal_5fe77b0fed3bc.pdfIn PDF document text
    • https://vogavowaxataner.weebly.com/uploads/1/3/4/2/134266619/mifus.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/vuraradaso/excel_automate_report_creation.pdfIn PDF document text
    • http://wejisisinutuvir.epizy.com/rewupozaxipezu.pdfIn PDF document text
    • https://s3.amazonaws.com/fajonubinomeder/muwoluwegonavurizomajo.pdfIn PDF document text
    • https://s3.amazonaws.com/jejulurowev/tubamokiriladusumu.pdfIn PDF document text
    • https://s3.amazonaws.com/dalava/modern_platform_bed_king_wood.pdfIn PDF document text
    • http://pozidijapepore.atwebpages.com/cuantos_tipos_de_investigacion_de_mercado_existen.pdfIn PDF document text
    • https://s3.amazonaws.com/rijaliwiguvex/time_warner_cable_tv_guide_myrtle_beach.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_off0000e02e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE02E 5612 bytes
SHA-256: b895a3fbeec9b12d5a99edd1288f2e0d39e94423e98ad1c441ad91c303065e2a
font_01_sfnt_off0000f35f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF35F 10644 bytes
SHA-256: 000afec7599afe56cb45a45d045b0a2ddcb9560b7d74009f0548b30139cefcfb

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