Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbf879ce7e9ebcfa…

MALICIOUS

PDF

77.5 KB Created: 2021-03-06 05:59:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 4eb26dbc3d28c8dfc4f56af77083f4c9 SHA-1: 702271b611e8c93c93a1ff31d76305feb9565d6c SHA-256: cbf879ce7e9ebcfa0b1f2a32095381a6d47470e064f9d6dd0c1b457da9854d08
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing or trojan. It contains multiple external URIs, including one that appears to be a lure for 'bible verse that the holy spirit is god' and another pointing to a link farm. The presence of these links suggests an attempt to redirect the user to malicious sites for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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://jumiwimov.ru/aws?utm_term=bible+verse+that+the+holy+spirit+is+god PDF link annotation
    • http://osthondroz.com/twas_the_night_before_christmas_words0pc8c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444885/normal_5fed3ffdb22f5.pdfIn PDF document text
    • https://cdn.sqhk.co/visukodo/SWOqhbM/strategic_management_society_login.pdfIn PDF document text
    • http://chambrely.xyz/36965489174lc044.pdfIn PDF document text
    • https://cdn.sqhk.co/kibizatududo/jjmjbge/linkinpark_piano_tiles_8_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481988/normal_5fe3a1e928bf1.pdfIn PDF document text
    • http://xubixaxar.22web.org/jofukowigisokotufi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484375/normal_5ff38bfd829d8.pdfIn PDF document text
    • http://skidki-day.store/607445939517sjxg.pdfIn PDF document text
    • http://jobware.pro/how_many_calories_are_in_a_medium_iced_coffee_from_dunkin_donutsczfvx.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475715/normal_5fc765bd40605.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385635/normal_6030f53700a1a.pdfIn PDF document text
    • http://italywom.space/best_waterproof_bluetooth_speaker_2018xoboq.pdfIn PDF document text
    • https://cdn.sqhk.co/xafazunusa/ih8Xajh/hoopp_capital_partners_linkedin.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379601/normal_5fcd10b908aa8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449172/normal_6026ddcd28636.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487905/normal_6042d715bcbe2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://juxenemijoguku.rf.gd/adm_pro_apk.pdfIn PDF document text
    • http://davutawopoban.epizy.com/45605671092.pdfIn PDF document text
    • http://nopasemetefut.epizy.com/rusipiwezidepega.pdfIn PDF document text
    • http://wowimes.epizy.com/buzaramewabarixujow.pdfIn PDF document text
    • http://vodugesivizere.epizy.com/vuwarubukomekix.pdfIn PDF document text
    • http://pavinudoj.epizy.com/42013431670.pdfIn PDF document text
    • http://veramok.rf.gd/retirement_definition.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e4e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4E7 5256 bytes
SHA-256: 1f55593678df8e3cc7e25151a3b656d93dc704e0e96cbe3d07482f11e406927c
font_01_sfnt_off0000f6de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6DE 10400 bytes
SHA-256: bea70082ae6de18028e739d71c24bd930d801170ed170a44f30f167e1803644e
font_02_sfnt_off00011a38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A38 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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