Malicious PDF — malware analysis report

Static analysis result for SHA-256 a45eff33fd89e4be…

MALICIOUS

PDF

89.5 KB Created: 2021-03-27 22:36:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: ac661f167034b98744f60487a44b7a25 SHA-1: 46863f148a03fdacb4a71b844d2014287782e8be SHA-256: a45eff33fd89e4bea65ff822fbb4c9f5f77c50e7fc4fd25aaa84f4e2e3939e33
126 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document contains a large number of embedded URLs, many pointing to disposable hosting, suggesting a link farm or phishing lure. The presence of 'utm_term' parameters in some URLs indicates an attempt to track user interactions with these deceptive links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/aws?utm_term=how+to+clean+hp+printhead+6830 PDF link annotation
    • http://kowojolajamuv.getenjoyment.net/wogijati.pdfIn PDF document text
    • https://rewumakabaw.weebly.com/uploads/1/3/4/8/134856880/4844456.pdfIn PDF document text
    • http://gofesirukuzud.22web.org/soneludexunamagifofi.pdfIn PDF document text
    • https://sizadefo.weebly.com/uploads/1/3/4/3/134381744/1479127.pdfIn PDF document text
    • http://mexicotop3.xyz/russian_car_driver_unblocked_games_weeblyegvza.pdfIn PDF document text
    • http://worameruvejaka.mywebcommunity.org/singer_sewing_machine_model_stylist_834.pdfIn PDF document text
    • https://jajaleregonu.weebly.com/uploads/1/3/4/2/134235513/bamujoxowugogupugeno.pdfIn PDF document text
    • http://katermore.ru/31187187183ciooi.pdfIn PDF document text
    • https://popivuzumozula.weebly.com/uploads/1/3/4/5/134500063/tiluvozaxa.pdfIn PDF document text
    • http://draiwenstore.online/star_trek_into_darkness_soundtrackodqeo.pdfIn PDF document text
    • https://jenodavosu.weebly.com/uploads/1/3/0/7/130775827/bileludopoguge_xesokef_lemuj_lewun.pdfIn PDF document text
    • http://tolumobibuseg.iblogger.org/viwevilatude.pdfIn PDF document text
    • http://nonoxutiwi.mypressonline.com/story_of_my_life_helen_keller.pdfIn PDF document text
    • http://jaxagogilexet.sportsontheweb.net/2020_guidelines_for_the_management_of_arterial_hypertension.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://suvalomimo.atwebpages.com/small_gods_audiobook_download.pdfIn PDF document text
    • http://xabigobagexuk.epizy.com/25134228383.pdfIn PDF document text
    • http://daferavore.epizy.com/bubon.pdfIn PDF document text
    • http://sadoboxijowem.myartsonline.com/vutolepowewepofuzaxawakin.pdfIn PDF document text
    • http://desutowifikabek.rf.gd/39154470659.pdfIn PDF document text
    • http://jesavel.rf.gd/mefafog.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010a7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A7D 5692 bytes
SHA-256: 8d7f1aaa246ad91edab31460a8e891a07587d5de204aeac64532f14ecaee3e9a
font_01_sfnt_off00011de1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11DE1 10936 bytes
SHA-256: 8df1dc462db266a349e2b936569111b16e97719009c3dd4456692e1a27dfae44
font_02_sfnt_off0001435e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1435E 16204 bytes
SHA-256: a95eff378c135b1ab40d10b3cd1da1bafbc07f86005f57898d079c90d712ddbd

Open this report in the interactive analyzer, or submit your own file for analysis.