Malicious PDF — malware analysis report

Static analysis result for SHA-256 afcdfc23044f1d92…

MALICIOUS

PDF

68.8 KB Created: 2021-02-21 01:22:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: b876c6749f364eba2b63272829c1fbc0 SHA-1: aeb7ba51d168d27c505fed6cc293237a7e739e42 SHA-256: afcdfc23044f1d9274f9969ea0076fdff1915f288c030ff7d81f721c37a36a4f
144 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
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/123?utm_term=how+to+share+whatsapp+group+link+on+facebook+page PDF link annotation
    • http://ledamujokada.22web.org/excel_vba_programming_examples_download.pdfIn PDF document text
    • https://cdn.sqhk.co/xemugugafot/WieOihg/kodekloud_engineer_wiki.pdfIn PDF document text
    • https://cdn.sqhk.co/kinanekoxo/ggnwhcN/vekepizobegitugajiju.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452199/normal_5ff9fe422c782.pdfIn PDF document text
    • https://cdn.sqhk.co/fatobaliv/c6vsgeh/10255969447.pdfIn PDF document text
    • http://zelafagilu.iblogger.org/37161781225.pdfIn PDF document text
    • https://cdn.sqhk.co/tedalome/fVXxifB/thief_simulator_pc_mods.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vobuluga.rf.gd/banujubapifekewapiroxin.pdfIn PDF document text
    • https://s3.amazonaws.com/xanunafojuloki/60463832373.pdfIn PDF document text
    • http://naxakise.epizy.com/rekorifefatoji.pdfIn PDF document text
    • https://s3.amazonaws.com/jupudizadid/video_er_from_a_website.pdfIn PDF document text
    • https://s3.amazonaws.com/jepinebawo/vuvon.pdfIn PDF document text
    • https://s3.amazonaws.com/dubiditiginowo/age_uk_attendance_allowance_application_form.pdfIn PDF document text
    • https://s3.amazonaws.com/suzujewa/vpn_master_proxy_mod_apk.pdfIn PDF document text
    • http://zutosagu.rf.gd/fintrac_guidelines_identification.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_off0000cf4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF4A 5536 bytes
SHA-256: d65343147a1ed43ad18eeca073da5d721768e1c96648bf70cd90fa6c0f653047
font_01_sfnt_off0000e22c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE22C 10540 bytes
SHA-256: c7a8cbaeb38f04e7443fd8d5ff395233ad4dee97d42040267af089f06d1be47c