Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd42a1e75961ac4a…

MALICIOUS

PDF

74.0 KB Created: 2021-02-24 15:47:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 4eeb25f04606b9ce3365d7171af4616e SHA-1: 2f7f632884b1f838c7ce9da6b51ee24b26f83027 SHA-256: bd42a1e75961ac4ae0d0407cc27973c19060522ee4b02288d131daf61cc1ee89
126 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous embedded URLs, many pointing to disposable domains and link farms, suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains metadata related to wkhtmltopdf and a date, but no clear textual lure. The presence of multiple external URIs and the 'link farm' heuristic strongly indicate a malicious intent to redirect users to potentially harmful sites.

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/wix?keyword=ridgevue+high+school+graduation+2020 PDF link annotation
    • https://xomikevogonenoj.weebly.com/uploads/1/3/4/7/134743799/nupijat.pdfIn PDF document text
    • https://cdn.sqhk.co/rekewuneboxu/3Ljfzxc/80496107630.pdfIn PDF document text
    • http://komaxinatobofe.medianewsonline.com/liminal_thinking_review.pdfIn PDF document text
    • http://boxidodo.22web.org/famogutedapujexix.pdfIn PDF document text
    • https://soxoxalumowaju.weebly.com/uploads/1/3/4/7/134768556/7504997.pdfIn PDF document text
    • http://gexomafe.mypressonline.com/3426771491.pdfIn PDF document text
    • http://pakirekugep.scienceontheweb.net/99373889582.pdfIn PDF document text
    • http://madoxorijegobe.sportsontheweb.net/risitoxe.pdfIn PDF document text
    • https://kidubaviputotej.weebly.com/uploads/1/3/4/5/134520398/begemukus.pdfIn PDF document text
    • https://cdn.sqhk.co/pasivuzuke/digzrhd/92001911068.pdfIn PDF document text
    • https://cdn.sqhk.co/sexuzoropa/7YaHdPI/kanolajemef.pdfIn PDF document text
    • http://lekezoreg.22web.org/15267723369.pdfIn PDF document text
    • https://cdn.sqhk.co/pasojixaju/dGHHx3F/pexijebefaduruxed.pdfIn PDF document text
    • https://sotokogel.weebly.com/uploads/1/3/4/2/134266154/b2c634.pdfIn PDF document text
    • https://levavepisemewo.weebly.com/uploads/1/3/5/3/135303450/ccbd5050576.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://turitize.rf.gd/how_to_connect_brother_hl-l2305w_to_wifi.pdfIn PDF document text
    • http://dixurudij.rf.gd/vifajol.pdfIn PDF document text
    • http://jisijuvod.myartsonline.com/painting_with_a_twist_dallas_tx_75209.pdfIn PDF document text
    • https://s3.amazonaws.com/lulelepese/57201309443.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e274.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE274 5540 bytes
SHA-256: bc8e7314d1b63f63449076bf5f2a468e0d030a31202050f4ef8db221c7aa0c38
font_01_sfnt_off0000f553.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF553 11060 bytes
SHA-256: 179170bacfa69f67bcb696029ae314288f71e70138d8401ab083e7f595ec90b3

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