Malicious PDF — malware analysis report

Static analysis result for SHA-256 c649db12124ac961…

MALICIOUS

PDF

80.4 KB Created: 2021-03-25 10:53:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: d6ebd1670b3b3d2c3de247f0af152de6 SHA-1: 257be837c8c24658bcba75b747d839867e8adb13 SHA-256: c649db12124ac96164003d7b66b9350e18b9e1980ab604757257ea038feff007
126 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, indicating a high probability of malicious intent. The PDF contains numerous embedded URLs, many pointing to disposable domains, suggesting a link farm or phishing lure. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' specifically flags this behavior, indicating the document's purpose is to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://soxebez.ru/wix?keyword=short+answer+questions+ap+us+history PDF link annotation
    • http://masimepipet.22web.org/93046098029.pdfIn PDF document text
    • http://tublitalia.space/nascar_race_tomorrow_timewclxk.pdfIn PDF document text
    • http://lozipazom.sportsontheweb.net/defemezifekufemapatejexox.pdfIn PDF document text
    • http://veselutut.mywebcommunity.org/how_to_get_donations_from_coca_cola.pdfIn PDF document text
    • http://osmosiotzs.fun/multiplication_table_chartpwama.pdfIn PDF document text
    • http://bozenuvobe.iblogger.org/exercices_corrigs_automatisme_industriel.pdfIn PDF document text
    • http://dvertsoff.ru/2005_honda_civic_si_hatchback_owners_manualwdgpy.pdfIn PDF document text
    • http://4kuhd.me/23044557617khil2.pdfIn PDF document text
    • http://a1metromovers.com/ejemplos_de_dialogos_informales_cortos0rvow.pdfIn PDF document text
    • http://premiumpornclips.com/lababewipukewuze47la9.pdfIn PDF document text
    • http://item-mask.top/baritone_ukulele_song_tabsrm6nb.pdfIn PDF document text
    • http://tunewejewuz.mypressonline.com/the_pact_2018_cabernet_sauvignon.pdfIn PDF document text
    • http://beremoter.online/kinobody_superhero_downloadt6i58.pdfIn PDF document text
    • http://olymptrade.buzz/48843170975dy1vt.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://50037ee0-0691-4a53-bdc2-b2f8f795cfa6.filesusr.com/ugd/b41a9a_7ffe1e9c05444c8f80015988e4e5a91d.pdf?index=trueIn PDF document text
    • https://6b137298-3864-41c5-aaa3-11744000c3c2.filesusr.com/ugd/b916f4_39d41d152ae64c88adf082d021e29647.pdf?index=trueIn PDF document text
    • http://besidoxaz.rf.gd/anker_bluetooth_keyboard_a7726_manual.pdfIn PDF document text
    • http://dululelafekupas.rf.gd/marukajawibonerunedikek.pdfIn PDF document text
    • https://ca30e0e0-ecf2-44ab-b6a2-fe26291458be.filesusr.com/ugd/34e21e_2be10e2c71694d7a8c03f4d7453cd548.pdf?index=trueIn PDF document text
    • https://9f503c4c-bf14-4dcb-9a7a-68e0e5bb3568.filesusr.com/ugd/8ac1ab_f37ae0b348c541bda9b40fb44c8e071f.pdf?index=trueIn PDF document text
    • https://abc5f1b3-ad37-4660-b048-d9bff2240d70.filesusr.com/ugd/a1fb68_0fe78581595d4b7a9b739dd06812bc5c.pdf?index=trueIn PDF document text
    • http://mevusajilitum.rf.gd/cruel_summer_taylor_swift_sheet_music.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_off0000f9e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9E2 5300 bytes
SHA-256: fd6e5cf205e0e794335854e953fb654f58f8531834422f98ab277b7f4319bc95
font_01_sfnt_off00010bfa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BFA 11336 bytes
SHA-256: eb7f4c9d225043dbe1ac2bf2c2f3eb7522ef611e7e5425317c74fc63c58e7da7

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