Malicious PDF — malware analysis report

Static analysis result for SHA-256 6db0b33f99354cb9…

MALICIOUS

PDF

77.0 KB Created: 2021-01-20 16:17:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: c4fbc9b7adc833f76b0aa6d3d6b04f5a SHA-1: b8953eb08f3cd465551894f177c521a6fded4f87 SHA-256: 6db0b33f99354cb9e95d521ddd87dc60aefc4c1e57316189af92f663db9f3a14
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://druttle.ru/123?utm_term=faceless+void+guide PDF link annotation
    • https://site-1168242.mozfiles.com/files/1168242/download_game_poker_offline_online_mod_apk.pdfIn PDF document text
    • https://vimijalubatek.weebly.com/uploads/1/3/4/7/134739875/9172236.pdfIn PDF document text
    • https://rejurikin.weebly.com/uploads/1/3/1/0/131070637/1301534.pdfIn PDF document text
    • https://puzomukasudugun.weebly.com/uploads/1/3/4/8/134865935/pijevinekev.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378628/normal_5fd159eaa8d46.pdfIn PDF document text
    • https://sutivekawexebe.weebly.com/uploads/1/3/1/6/131636655/6584503.pdfIn PDF document text
    • https://badetujunomut.weebly.com/uploads/1/3/1/8/131857650/d1fbf43.pdfIn PDF document text
    • https://site-1178403.mozfiles.com/files/1178403/the_greatest_love_songs_of_the_60s.pdfIn PDF document text
    • https://kojaresojew.weebly.com/uploads/1/3/4/3/134312518/buxas_kavijazi.pdfIn PDF document text
    • https://jumomemokipus.weebly.com/uploads/1/3/0/8/130874307/f008f68f42fe107.pdfIn PDF document text
    • http://tevuvisena.iblogger.org/94438214963.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bupujipa.epizy.com/60342494560.pdfIn PDF document text
    • https://s3.amazonaws.com/seriposuj/43985417831.pdfIn PDF document text
    • https://s3.amazonaws.com/xabalaru/2020_calendar_printable_australia.pdfIn PDF document text
    • https://s3.amazonaws.com/megodipewukitoj/oster_burr_grinder_manual.pdfIn PDF document text
    • http://zizakipu.epizy.com/48067568982.pdfIn PDF document text
    • https://s3.amazonaws.com/jidosatikim/9347925591.pdfIn PDF document text
    • https://s3.amazonaws.com/lusabifef/jaxamutovurawekutaje.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_off0000f2e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2E2 5024 bytes
SHA-256: af1dbe03520e921cd79b1f3780cba0c2f482753afde63b27240f4e6a677b8204
font_01_sfnt_off00010417.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10417 10356 bytes
SHA-256: 10301e6708bb452805478e0b8e351011d338e616e483093c4bacce75a3a23d39

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