Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbeae954eedb392e…

MALICIOUS

PDF

69.1 KB Created: 2021-03-01 23:16:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 299f08536145e38972d95665ad57f27d SHA-1: c877cf5bede116c48983168d963465c9e262198f SHA-256: bbeae954eedb392e7b8a85720d5513b91f5276e9659cd4fe914a9974ddea6e77
126 Risk Score

Malware Insights

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

The PDF document contains numerous external URIs and is flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. The document body, though heavily obfuscated, suggests a lure related to printer manuals, which is a common tactic for phishing and malware distribution. The presence of multiple disposable domains and link farms indicates a deliberate effort to obscure the final malicious destination.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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
  • 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://vilenefex.ru/wix?keyword=hp+deskjet+2540+series+manual PDF link annotation
    • https://rozuguki.weebly.com/uploads/1/3/0/7/130775318/5417604.pdfIn PDF document text
    • http://kebudatamon.iblogger.org/bhagwa_rang_dj_ringtone_song.pdfIn PDF document text
    • http://lamaded.mywebcommunity.org/39244291592.pdfIn PDF document text
    • https://zupavuzinopaz.weebly.com/uploads/1/3/4/2/134265708/8989176.pdfIn PDF document text
    • http://poxumanavofeboz.scienceontheweb.net/sanunuzolomanejimezerub.pdfIn PDF document text
    • http://sabumow.mygamesonline.org/dogokizaxotukamej.pdfIn PDF document text
    • http://josebixotarez.22web.org/fixed_term_employment_contract_template_malaysia.pdfIn PDF document text
    • http://xonejalevesezom.sportsontheweb.net/70378698957.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tozudojixoku.epizy.com/alien_shooter_mod_apk_latest_version.pdfIn PDF document text
    • http://titugol.atwebpages.com/54214867169.pdfIn PDF document text
    • http://kugezukakig.rf.gd/23663248914.pdfIn PDF document text
    • http://tunogamux.rf.gd/moruraxepi.pdfIn PDF document text
    • https://s3.amazonaws.com/retisovojor/28674895848.pdfIn PDF document text
    • https://s3.amazonaws.com/gofiguj/17603199511.pdfIn PDF document text
    • http://legasefurat.epizy.com/bluetooth_adapter_android_example.pdfIn PDF document text
    • https://s3.amazonaws.com/faluzotixupi/lenowowuvimesavikufiri.pdfIn PDF document text
    • http://vogojitipam.epizy.com/69318570287.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_off0000d1a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1A5 5692 bytes
SHA-256: e9079dd0a5faad5ac67983a0d632ac6e27919609057117ad28858d1140d940d6
font_01_sfnt_off0000e4fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4FE 9992 bytes
SHA-256: e3cf48518f213e1642d55404adc615bc32811ef8f6e4438d227b687ca9a11c76

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