Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b67ba74ae0ac4ab…

MALICIOUS

PDF

72.5 KB Created: 2021-02-26 20:15:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 0b7e5a93abd4776412d6a9ba3204d0df SHA-1: d72f8aa5f824195126599e164ba68a302be85ea6 SHA-256: 4b67ba74ae0ac4ab3ff756e4c4a07a8c00a832e438854b06f879892161ea715c
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://xezojetit.ru/strik?utm_term=quadra+fire+cb1200+parts+manual PDF link annotation
    • https://pekonupag.weebly.com/uploads/1/3/2/7/132741447/9474082.pdfIn PDF document text
    • http://nabavawuzafurur.mygamesonline.org/how_to_know_if_a_car_seat_is_faa_approved.pdfIn PDF document text
    • http://siwivelijutore.medianewsonline.com/43924777541.pdfIn PDF document text
    • https://siviwoxepigomuz.weebly.com/uploads/1/3/0/7/130739754/woserapuzemamaz-tuwaxiri-penazitebise-leneniwibavis.pdfIn PDF document text
    • https://perelixaji.weebly.com/uploads/1/3/4/8/134881923/pewakutazoxati.pdfIn PDF document text
    • https://notefusiwedamap.weebly.com/uploads/1/3/4/8/134872173/4334430.pdfIn PDF document text
    • http://raifaisentapp.online/domain_and_range_of_linear_functions_worksheetf4t2k.pdfIn PDF document text
    • http://uscarins.info/1996_chevy_s10_brake_light_wiring_diagrammhpx0.pdfIn PDF document text
    • https://nipujari.weebly.com/uploads/1/3/1/3/131384055/ad2768a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://piwakitidi.onlinewebshop.net/how_to_apply_rudiments_on_drums.pdfIn PDF document text
    • https://s3.amazonaws.com/vapite/fisoguwoguludevesuviju.pdfIn PDF document text
    • https://s3.amazonaws.com/vonuxagupeduze/coumarin_glycosides.pdfIn PDF document text
    • https://s3.amazonaws.com/xapota/lupebuxewefuxexidi.pdfIn PDF document text
    • https://s3.amazonaws.com/kifutizijebuj/c._a_course_full_information.pdfIn PDF document text
    • https://s3.amazonaws.com/kugelilizibuwum/jujedokoxekeduwinebobopi.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dc72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC72 5828 bytes
SHA-256: 2a2541f6ee1e61c24df4776907571d0d87928055e2068339fda5b56acb3394d8
font_01_sfnt_off0000f02f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF02F 10852 bytes
SHA-256: c7f3a693a02d21525f87f588dda34b372e2ca02f6cc77bdaf7cb33004231ef5e

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