Malicious PDF — malware analysis report

Static analysis result for SHA-256 02871fddeac0609d…

MALICIOUS

PDF

76.3 KB Created: 2021-05-14 15:03:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 0e115613d6cf69342c8ea2187fa9bfcf SHA-1: 45d1a6b6a4cb032c933041dd3a5bf2252c7be8b1 SHA-256: 02871fddeac0609d98c2ecaebd6ec69d103d1916cac171d7099cfd9435923d8f
126 Risk Score

Malware Insights

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

The PDF document is identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains numerous embedded URIs, many pointing to disposable hosting domains, suggesting a link farm or redirection scheme to deliver malware. The document body, though truncated, appears to be a lure for a laptop manual, aiming to trick users into clicking the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://mezovuduw.ru/strik?utm_term=manual+do+notebook+hp+pavilion+dv6000+em+portugues PDF link annotation
    • https://fuvafejozogixuj.weebly.com/uploads/1/3/4/8/134878931/885892.pdfIn PDF document text
    • http://gebikatafexanu.22web.org/brand_song_video.pdfIn PDF document text
    • https://sodomolu.weebly.com/uploads/1/3/5/3/135398587/tuloduf.pdfIn PDF document text
    • https://turakenedonatup.weebly.com/uploads/1/3/4/6/134610331/fepaporu.pdfIn PDF document text
    • https://cdn.sqhk.co/jekefebiba/h9zDhbN/jixawugebixodelesixiv.pdfIn PDF document text
    • https://cdn.sqhk.co/kobedobofepo/fgiiceu/cairo_club_orlando.pdfIn PDF document text
    • https://cdn.sqhk.co/tatidukigag/182ihOC/77494991410.pdfIn PDF document text
    • http://bemoxanomazopix.iblogger.org/chemistry_1_worksheet_stoichiometry_practice_problems.pdfIn PDF document text
    • http://vabetovopux.66ghz.com/sakopofunaxizuz.pdfIn PDF document text
    • https://jodegometokak.weebly.com/uploads/1/3/1/6/131606115/pabij.pdfIn PDF document text
    • https://cdn.sqhk.co/wopidevepip/QgfxgiH/fosuwuzatexuvog.pdfIn PDF document text
    • https://tekuxarutupun.weebly.com/uploads/1/3/0/7/130775258/9985788.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sazosubegus.epizy.com/doberman_images_free.pdfIn PDF document text
    • http://rutenodisekorin.rf.gd/arp_poisoning_software.pdfIn PDF document text
    • https://s3.amazonaws.com/fasomusogapovi/antalya_resorts_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/653d4695-85f0-48e6-b56d-d6a08c2a82bb/88212424199.pdfIn PDF document text
    • https://s3.amazonaws.com/xijalovelokolep/23839464031.pdfIn PDF document text
    • https://s3.amazonaws.com/semuxemakaw/94375670682.pdfIn PDF document text
    • https://s3.amazonaws.com/vitelitubovuluj/nenajen.pdfIn PDF document text
    • http://supovopekowo.epizy.com/togutalixikemow.pdfIn PDF document text
    • https://s3.amazonaws.com/jujadodedaruxix/depubunazorat.pdfIn PDF document text
    • http://dikubok.rf.gd/how_to_prepare_for_fe_civil_exam.pdfIn PDF document text
    • http://mevusajilitum.rf.gd/karokumalasiru.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/07aa5ff8-3d62-449a-b50c-a838dbcdb287/82542737718.pdfIn PDF document text
    • http://libizokize.rf.gd/how_to_use_hamilton_beach_brewstation.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_off0000e65f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE65F 5940 bytes
SHA-256: 136ef082cab81b6c0b82381f17620d5e82530ca04c84c4da1e3c40c596657f4b
font_01_sfnt_off0000fa73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA73 12836 bytes
SHA-256: e5b7117d5eb9b75d23db9147bade8922c87bc4cd2ec5258663a0d503e831d1ca

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