Malicious PDF — malware analysis report

Static analysis result for SHA-256 6381a9f3b9dd5668…

MALICIOUS

PDF

72.3 KB Created: 2021-02-25 03:50:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: c21319568264209c7a2244172a69ee7a SHA-1: 140064583657a14641b19bf73b54f69311baada2 SHA-256: 6381a9f3b9dd56681ab098bc6b7825d81763e33c33c9120181884595b74a20ed
126 Risk Score

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://druttle.ru/award?keyword=review+schwinn+ic4 PDF link annotation
    • http://zizodoroluxonaf.sportsontheweb.net/who_is_the_most_evil_norse_god.pdfIn PDF document text
    • https://duzareledibasa.weebly.com/uploads/1/3/4/8/134890493/daveligasis.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393900/normal_5feaef06c057f.pdfIn PDF document text
    • https://cdn.sqhk.co/tegasipitif/gjbtinB/cheats_para_metal_slug_3.pdfIn PDF document text
    • https://cdn.sqhk.co/xatuxazaz/PhiFahe/94606689764.pdfIn PDF document text
    • https://rilavowa.weebly.com/uploads/1/3/2/7/132740415/4a74370741e.pdfIn PDF document text
    • https://fekawuzode.weebly.com/uploads/1/3/5/9/135993312/lemukuz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388614/normal_6015ae7416d67.pdfIn PDF document text
    • https://cdn.sqhk.co/wuwoxegolewa/hbgflRh/my_talking_tom_gold_run_mod_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473619/normal_601d26c72846f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://doriponesarom.myartsonline.com/jizebonuwenizelarobix.pdfIn PDF document text
    • http://tiwatimab.atwebpages.com/coway_ap-1512hh_hepa_air_purifier_reviews.pdfIn PDF document text
    • https://s3.amazonaws.com/nuvukivaxiren/jurnal_fraktur_antebrachii.pdfIn PDF document text
    • https://s3.amazonaws.com/vufupu/blue_jay_movie_480p.pdfIn PDF document text
    • http://gixarewujedel.atwebpages.com/povukadaxalakinelewut.pdfIn PDF document text
    • http://pikubub.onlinewebshop.net/how_to_reset_plantronics_voyager_legend.pdfIn PDF document text
    • http://sutexuvidag.myartsonline.com/o_come_to_the_altar_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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e173.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE173 4796 bytes
SHA-256: b4b0102d19d17b06c6c763266630bba7776292a4dd3ba955fbb010c79a28fc20
font_01_sfnt_off0000f1ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1EC 10108 bytes
SHA-256: f7043728a5a34df03f27b10ef3b92922d2632350a64f0b2acab9e36845f94aee