Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed2cd1dfacfacc13…

MALICIOUS

PDF

79.8 KB Created: 2021-04-04 12:40:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 69c3f3ad3cccb21bea854d45e1d77963 SHA-1: 7b9cba6d1f122dfc8ef8c76d17be0641ab07772a SHA-256: ed2cd1dfacfacc1316b610d4d7dc2f54347419e45d601dc4c5595945f10833db
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The document body, though heavily obfuscated, contains references to installing a Bosch dishwasher, likely a lure to direct the user to malicious URLs. The presence of numerous external URIs, many on disposable hosting, suggests a phishing or credential harvesting attempt.

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://druttle.ru/strik?utm_term=how+to+install+a+bosch+800+series+dishwasher PDF link annotation
    • http://detonic-shop.website/sara_bareilles_love_song_pianoou1i8.pdfIn PDF document text
    • http://tofogabe.iblogger.org/the_bourne_ultimatum_free.pdfIn PDF document text
    • http://dehydratedoriginalgoodness.com/film_jack_reacher_never_go_back_full_movie_subtitle_indonesiagh7s4.pdfIn PDF document text
    • http://funiwigurogamu.iblogger.org/kerasupavanodu.pdfIn PDF document text
    • http://esagafow.fun/In PDF document text
    • http://collegegraduatecentraldating.com/61869965256ox401.pdfIn PDF document text
    • http://vojakebuniseti.22web.org/wokukibojebepopigabe.pdfIn PDF document text
    • http://sale50.pro/why_is_the_red_light_flashing_on_my_first_alert_smoke_detectorlbl9z.pdfIn PDF document text
    • http://student-yurist.ru/9141171161sde9o.pdfIn PDF document text
    • http://govovimifakine.mywebcommunity.org/fujajugimuxilezeju.pdfIn PDF document text
    • http://kartaidatodemeleri.com/mugidedobusewewenogy2r8n.pdfIn PDF document text
    • http://dedigevobunobe.medianewsonline.com/vexovejewof.pdfIn PDF document text
    • http://gooddevice-online.com/14269892809ax8bj.pdfIn PDF document text
    • http://thiswaytovogue.com/a_dolls_house_sparknotes_act_141rg3.pdfIn PDF document text
    • http://erethiztzj.space/zusoposetoxa25h40.pdfIn PDF document text
    • http://opssmall.space/charlie_malayalam_movie_hd_imagesx9i2k.pdfIn PDF document text
    • http://mutujejeturuduf.medianewsonline.com/danfoss_axial_piston_pump.pdfIn PDF document text
    • http://arfesopt.com/android_textinputlayout_error_paddingjlrkr.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://safilizejodi.epizy.com/mosagathi_album_kannada_song.pdfIn PDF document text
    • http://valupakukav.myartsonline.com/autonomous_robot_vehicles.pdfIn PDF document text
    • http://vatunewit.epizy.com/peganatuzivukixav.pdfIn PDF document text
    • http://lanosebezazov.onlinewebshop.net/6274025587.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_off0000f93f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF93F 5556 bytes
SHA-256: d87fda2ea6a94fd1f6a9a0269cc5b17e9ee230d935879e8ec72d5782b18b69bc
font_01_sfnt_off00010c25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C25 11052 bytes
SHA-256: 3a6b7d36511d5498edf7dfac8cb960dd5450f9722764e72b6749e1b0a108855b

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