Malicious PDF — malware analysis report

Static analysis result for SHA-256 4603f706a78915d1…

MALICIOUS

PDF

71.7 KB Created: 2021-02-25 20:18:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 4afb2e87faa0be025de16443e2e2953e SHA-1: 0cd0d6fe99c963317325a338f7a69edd4576830e SHA-256: 4603f706a78915d1adfcf4de139a1adbf9ecc3a873aba2f725fc14b34af08408
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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/award?keyword=boss+lady+mindset+quotes+instagram PDF link annotation
    • http://gramnews.xyz/4187548404uuu8u.pdfIn PDF document text
    • https://lekudelido.weebly.com/uploads/1/3/1/3/131378953/zojujozukavubez-tiwif-sokomenipug.pdfIn PDF document text
    • http://retamos.mygamesonline.org/73739399744.pdfIn PDF document text
    • https://netajeripen.weebly.com/uploads/1/3/6/0/136053717/numuwo_jajirelewusi_fimojaporale_felemuxenavi.pdfIn PDF document text
    • http://dmgameplan.com/gromacs_manualdq48e.pdfIn PDF document text
    • http://pe50off.pro/fumaxotezinjt2w8.pdfIn PDF document text
    • https://dawejufajipamoz.weebly.com/uploads/1/3/5/3/135350304/4232c4.pdfIn PDF document text
    • http://vbruti.site/ffxiv_glazenut_guiderui2v.pdfIn PDF document text
    • http://perevod24-card2card.site/gcse_english_language_question_2_model_answer3zsux.pdfIn PDF document text
    • https://lugilabujenubo.weebly.com/uploads/1/3/4/3/134320616/duxawuxitenasaloz.pdfIn PDF document text
    • https://risogaruwakev.weebly.com/uploads/1/3/4/6/134634919/be805a953e023.pdfIn PDF document text
    • http://help-nanny.site/sogifaletugilivubobesumunn4gkq.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tejuvonixag/pakistani_punjabi_movie_chooriyan.pdfIn PDF document text
    • http://futikuzita.onlinewebshop.net/dekapi.pdfIn PDF document text
    • http://zesafemumibow.myartsonline.com/39345323566.pdfIn PDF document text
    • https://s3.amazonaws.com/dixaleko/72158312482.pdfIn PDF document text
    • http://kedokonox.rf.gd/femtosecond_laser_waveguide_writing.pdfIn PDF document text
    • http://sikejilewiz.epizy.com/autoresponder_wa_pro_apk_1._2._8.pdfIn PDF document text
    • http://vipebajivakal.epizy.com/mivorepetezuwu.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_off0000d315.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD315 5420 bytes
SHA-256: a4259c1ca12050430d1ec8a2ac3045c7307637b59eb18114cf3b9dda5676a6f1
font_01_sfnt_off0000e569.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE569 1800 bytes
SHA-256: daad3f347a4f42f432ee9983e619a7c063e36761dba5934b469418034847e28e
font_02_sfnt_off0000edf7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDF7 10344 bytes
SHA-256: fcfd7e52e7c4d98673e51b24904cd25cb72dc341391afdf0eeb247b9601cc37c