Malicious PDF — malware analysis report

Static analysis result for SHA-256 cde236e462b60641…

MALICIOUS

PDF

77.4 KB Created: 2021-02-22 18:29:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: fcf2f7e80d46e0a4534d5a15cf3f8e5d SHA-1: b7f1ace4847993c9e4de687c0a88fcde6762834f SHA-256: cde236e462b606417a92841c3d73459e73c9bd81f17f2b70339c0d1d796193a6
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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://jacksth.ru/wb?keyword=how%20much%20do%20star%20citizen%20ships%20cost PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4447258/normal_5fcd0e640f184.pdfIn PDF document text
    • http://mexicotop3.xyz/44244319671zsyjd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381543/normal_5fff3055426d8.pdfIn PDF document text
    • http://leoidet.xyz/nolusobugozovupidavafirokpoz1.pdfIn PDF document text
    • https://cdn.sqhk.co/votojuxosaf/dijijUO/75664426733.pdfIn PDF document text
    • https://cdn.sqhk.co/tixunudixa/Kggibgj/fastest_cars_under_10k_nz.pdfIn PDF document text
    • http://badgesverified.com/perimeter_of_polygons_worksheet_4th_gradexutgh.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368985/normal_5ff4550acc1a1.pdfIn PDF document text
    • https://cdn.sqhk.co/fukonovum/giifhab/47140132966.pdfIn PDF document text
    • http://thefortykuti.com/maths_formulas_for_class_7_download5hcx2.pdfIn PDF document text
    • https://cdn.sqhk.co/zolulesar/ibGdYhc/video_calling_devices_for_elderly.pdfIn PDF document text
    • https://cdn.sqhk.co/vesagivara/ihbjgjd/ganakope.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386613/normal_5fd962ffc1b7f.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/fuwawibu/migevikile.pdfIn PDF document text
    • https://s3.amazonaws.com/nijudow/cbre_report_tech_jobs.pdfIn PDF document text
    • https://s3.amazonaws.com/fowikorejodi/296570257.pdfIn PDF document text
    • https://s3.amazonaws.com/mixanaz/financial_reporting_tools_online.pdfIn PDF document text
    • https://s3.amazonaws.com/woxorojero/26162072045.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_off0000f1e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1E4 5384 bytes
SHA-256: 6ef1c35fe883afee22f2d52a5c16712e52b9ac89348a9790cb7bb99c166e889f
font_01_sfnt_off0001041f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1041F 10568 bytes
SHA-256: 66786bb7fcf135f12eb4d68100baf80e2e65b237139e09f1c775743c4089a030