Malicious PDF — malware analysis report

Static analysis result for SHA-256 57179987f7077ec6…

MALICIOUS

PDF

107.9 KB Created: 2021-03-17 01:13:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5c97628efa5c863ccd5943f47c1a5969 SHA-1: 3680215921863b7fa2f26784f38439596e12c56b SHA-256: 57179987f7077ec6506c6ab3bffb0df031b41cb99eb44d1677d6595374e7c447
196 Risk Score

Malware Insights

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

The PDF contains numerous external links, many of which point to domains designed to host malicious PDF files, such as 'afracheat5.xyz'. The document body, though heavily obfuscated, suggests a lure related to 'antifungicos pdf', likely a phishing tactic to trick users into downloading malware disguised as legitimate documents. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9954

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://mezovuduw.ru/award?keyword=mecanismo+de+accion+de+los+antifungicos+pdf PDF link annotation
    • http://afracheat5.xyz/mewutu7szip.pdfIn PDF document text
    • http://barashik.space/90243720719xm5hh.pdfIn PDF document text
    • https://s3.amazonaws.com/farowug/luwuwugedareve.pdfIn PDF document text
    • http://zubiki.top/factory_building_design7yjxl.pdfIn PDF document text
    • https://s3.amazonaws.com/panalipolifod/sevol.pdfIn PDF document text
    • http://rerikadarax.iblogger.org/bond_indenture_covenants_balance_sheet.pdfIn PDF document text
    • http://uchebnoe.website/52321784382qx1uh.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabisura/zapupisubedediz.pdfIn PDF document text
    • https://s3.amazonaws.com/wemofodi/70884024400.pdfIn PDF document text
    • https://s3.amazonaws.com/fulosobezur/fisone.pdfIn PDF document text
    • http://terem.space/superconscious_mind_powera9q9t.pdfIn PDF document text
    • https://s3.amazonaws.com/lowuwofuxali/mexegiluvavibitadive.pdfIn PDF document text
    • https://s3.amazonaws.com/jejulurowev/62493411204.pdfIn PDF document text
    • http://scarcebook.com/what_does_quantum_shift_meanq01b8.pdfIn PDF document text
    • https://s3.amazonaws.com/kesumasaka/betheme_header_builder_plugin_free.pdfIn PDF document text
    • http://submonster.xyz/the_prayer_of_twenty_millionsey55c.pdfIn PDF document text
    • https://s3.amazonaws.com/nevovumowa/biometric_security_system_project.pdfIn PDF document text
    • http://padaxopawudu.iblogger.org/31611757540.pdfIn PDF document text
    • https://s3.amazonaws.com/xuxifuzituwu/tidadov.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://c4647614-9ff8-4b00-b819-08dc938bd166.filesusr.com/ugd/5d3f24_e46a813d688242a483384e0a8b57f05d.pdf?index=trueIn PDF document text
    • http://leragirifodoz.rf.gd/how_to_improve_christian_marriage.pdfIn PDF document text
    • https://dbba0f06-1911-40f0-8c80-a2638c7f81cc.filesusr.com/ugd/b13fd1_27ab087c3b6c4234ad599320e2e143b9.pdf?index=trueIn PDF document text
    • https://054d5c26-596f-48a3-87a7-0fc79031e5db.filesusr.com/ugd/599026_57bdc24997d840638fa616eb0242fca9.pdf?index=trueIn PDF document text
    • http://tasefireribiziv.epizy.com/what_was_the_act_of_uniformity_1549.pdfIn PDF document text
    • https://fad58b31-c538-4d3f-828d-7998eec853b9.filesusr.com/ugd/7e6083_928f7fbe90ff447ba55e53ab58d5a8c6.pdf?index=trueIn PDF document text
    • https://6e8b94c7-278c-4a65-9c30-8d61c93a8f31.filesusr.com/ugd/9ff9b8_517f9080d79b426aa7203dade9c3c041.pdf?index=trueIn 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_off00016410.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16410 5384 bytes
SHA-256: 641c3796cf0f49b5d478f13ecaed99dcd1be3af11fa266afe3f131b825e5e7e9
font_01_sfnt_off00017664.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17664 12596 bytes
SHA-256: 0fafc09c16799f69f11eb93410bdff5a7bd3a18d143c318453bb27b1a96813ae

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