Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ef0294f9a5b8b84…

MALICIOUS

PDF

70.7 KB Created: 2021-03-07 14:47:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: d3e91a87987015dc82d8f386ddd7497c SHA-1: a63b34fa1191115cd5d876a83fe50d0fa725b072 SHA-256: 8ef0294f9a5b8b848ef3f774506bc629d82c8fb8c927d5447c46e38771b596b9
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://midufefew.ru/award?keyword=the+importance+of+being+earnest+film+online+free PDF link annotation
    • https://balikawe.weebly.com/uploads/1/3/4/6/134659528/nituteje_gekawowelukemo_zasaru_mowerezefine.pdfIn PDF document text
    • http://copyrighthelpbusiness.net/download_books_for_ipad_freeynwy0.pdfIn PDF document text
    • https://moxudoged.weebly.com/uploads/1/3/3/9/133999753/2744933.pdfIn PDF document text
    • https://wasoxojeroxinab.weebly.com/uploads/1/3/4/8/134888233/5570329.pdfIn PDF document text
    • https://gokaletuwatuni.weebly.com/uploads/1/3/6/0/136098233/jemeket.pdfIn PDF document text
    • https://zazewefagawi.weebly.com/uploads/1/3/0/7/130776698/niwepivo.pdfIn PDF document text
    • https://cdn.sqhk.co/kosojevevoxo/iiBxVZS/84105264407.pdfIn PDF document text
    • http://titonigofitazi.iblogger.org/8949490483.pdfIn PDF document text
    • https://zisamezasebav.weebly.com/uploads/1/3/3/9/133997726/dobapojavular.pdfIn PDF document text
    • https://vejikawotepux.weebly.com/uploads/1/3/4/8/134887167/bc2bad957b955f.pdfIn PDF document text
    • https://safamitiwifiro.weebly.com/uploads/1/3/0/7/130739579/bulalunix_vetarivutevej_pejatafali_wowufujuvitu.pdfIn PDF document text
    • http://hisgohar.site/xapaxalevebevijemssdin.pdfIn PDF document text
    • https://cdn.sqhk.co/lezubenewago/gdhegjp/95651370029.pdfIn PDF document text
    • https://cdn.sqhk.co/vefusujix/ezVbHlu/juzazotutawumupupidep.pdfIn PDF document text
    • https://cdn.sqhk.co/jefapukawore/uQsjgjg/2246448291.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/xozeb/72720805216.pdfIn PDF document text
    • https://s3.amazonaws.com/daselex/62806957529.pdfIn PDF document text
    • https://s3.amazonaws.com/juvosi/pathala_bhairavi_movie_utorrent.pdfIn PDF document text
    • http://latuwukatagowa.epizy.com/7529487297.pdfIn PDF document text
    • https://s3.amazonaws.com/donake/adobe_acrobat_for_android_mobile_free.pdfIn PDF document text
    • https://s3.amazonaws.com/xafaxotaful/report_nuisance_calls_sky.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_off0000d69d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD69D 5516 bytes
SHA-256: 0d8695b7ae260679f175c546d0fd64945c2a39efa785a4739837d664a52db0d4
font_01_sfnt_off0000e930.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE930 10448 bytes
SHA-256: 3ae33c37f7c15034ef610d8f5d351a412573f20972021d4c31ac8a208767cf43