Malicious PDF — malware analysis report

Static analysis result for SHA-256 c98a34bf7f52ebbe…

MALICIOUS

PDF

63.2 KB Created: 2021-02-23 14:43:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 57f88a15c94cf3aad7d6cb07af20fe87 SHA-1: d3fa49da38280c4c554c70d70fc4f12f14419ab8 SHA-256: c98a34bf7f52ebbed072e32e385777a03519792755230a9d2720760be108251f
196 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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://maypoin.ru/wb?keyword=dell%20inspiron%20n7110%20ram%20replacement PDF link annotation
    • https://pujawemufupu.weebly.com/uploads/1/3/2/6/132680931/fetef.pdfIn PDF document text
    • https://guzuwifaxad.weebly.com/uploads/1/3/4/0/134096987/6c7189bbdb51.pdfIn PDF document text
    • http://lisolu.org/evoland_switch_physicalrwn4l.pdfIn PDF document text
    • http://lnstagramsupportlives.com/pivomipenupola5j4wt.pdfIn PDF document text
    • https://vekewofamir.weebly.com/uploads/1/3/4/1/134131384/3236697.pdfIn PDF document text
    • http://1yamal.space/15826309518die7k.pdfIn PDF document text
    • https://funebaxap.weebly.com/uploads/1/3/4/3/134399245/6189958.pdfIn PDF document text
    • http://specrazreshenie.com/android_borescope_endoscopebtvm9.pdfIn PDF document text
    • https://wisamifogafize.weebly.com/uploads/1/3/4/5/134598642/0d7f88.pdfIn PDF document text
    • https://tunupufimudodo.weebly.com/uploads/1/3/4/3/134324073/bejomadutasupodit.pdfIn PDF document text
    • https://remitibomuko.weebly.com/uploads/1/3/4/8/134853657/teloki.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/matogapibelifiv/apple_music_family_plan_android.pdfIn PDF document text
    • http://fikuputo.epizy.com/ek_chiraiya_ghosle_ko_ringtone.pdfIn PDF document text
    • https://s3.amazonaws.com/vatakefojunib/bereket_emeklilik_bes_ayrlma_talep_formu.pdfIn PDF document text
    • https://s3.amazonaws.com/zoluwivebiro/best_shooting_games_apk.pdfIn PDF document text
    • http://nenilezum.epizy.com/calling_card_template_word.pdfIn PDF document text
    • https://s3.amazonaws.com/mijumomub/wenefojiduwanuz.pdfIn PDF document text
    • https://s3.amazonaws.com/xeruxaxer/tonobefikim.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_off0000b89c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB89C 5352 bytes
SHA-256: 493f16a080b4ebf5cd229f6ad3371c18bfb1ce929a2e80f3f3783ed9bf5cee7b
font_01_sfnt_off0000cacb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCACB 10828 bytes
SHA-256: dbd701963631c05545bc71d425f823bbd9eebcd51cabe619687322056c29e07e

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