Malicious PDF — malware analysis report

Static analysis result for SHA-256 a93707a0b95f594a…

MALICIOUS

PDF

84.7 KB Created: 2021-02-22 07:59:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 20705270eb188ab405ea51864b288c6e SHA-1: 4c464ef4fb13e84ae3a066a61de84183518034be SHA-256: a93707a0b95f594a5f377e7198d7e5c88efbfcc38641fb4452ddac5939d6df8b
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://seumenha.ru/wix?keyword=sabes+como+te+dicen+a+vos+2018 PDF link annotation
    • http://summ-ita.space/lojibiwebenofejomxous.pdfIn PDF document text
    • http://biotringel.shop/finigaraperure2r5uz.pdfIn PDF document text
    • http://italy50wow.pro/74356927163vtg3g.pdfIn PDF document text
    • https://cdn.sqhk.co/xuluriwu/Qja2r62/18725803636.pdfIn PDF document text
    • https://pajejasebuwosiw.weebly.com/uploads/1/3/0/8/130813778/vixalokenexopigeju.pdfIn PDF document text
    • https://cdn.sqhk.co/fejavegiwo/2ghYcih/jogutewarusuraxon.pdfIn PDF document text
    • https://cdn.sqhk.co/ruvonusebex/hcicijr/92500081879.pdfIn PDF document text
    • https://cdn.sqhk.co/xidafigutoxa/YQgjjeH/voice_recorder_pro_7_android.pdfIn PDF document text
    • http://itanah.space/tagevotonujizoirl3q.pdfIn PDF document text
    • https://cdn.sqhk.co/dabozijide/jajfgg0/world_soccer_memory_cup_2018_game.pdfIn PDF document text
    • https://cdn.sqhk.co/karapenakozi/hd9aKUl/phoenix_weather_month_of_september.pdfIn PDF document text
    • https://cdn.sqhk.co/loganidob/ggibeMh/poptopia_2019_performers.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/lijulijowivaze/vibinakinupaz.pdfIn PDF document text
    • https://s3.amazonaws.com/dojivewobasuval/28236499688.pdfIn PDF document text
    • https://s3.amazonaws.com/xovekolamoxe/zigenigafama.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_off00010a20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A20 5780 bytes
SHA-256: dc068f334bd1ac2d2ebaee1193f8ac929e72247ba987bae07cda89a224099056
font_01_sfnt_off00011dc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11DC5 12264 bytes
SHA-256: 875abdcd079c076408eebb4c6d4b4096b0338edb5e02da61a42aff5cedde3c49