Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b2ce260e8b1eacd…

MALICIOUS

PDF

72.0 KB Created: 2021-02-25 15:16:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 90b98cec9f5268a0a9499627be15cd34 SHA-1: 5674d20f11cd32cc3b456aaa306f31f61fe2e7d8 SHA-256: 0b2ce260e8b1eacd00de14fd648f3cde9d73443ce65d07dbcb959835745020e9
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/strik?utm_term=can+you+get+new+battery+for+kindle PDF link annotation
    • https://zoxiniguve.weebly.com/uploads/1/3/4/5/134584112/tarelefugipikopijal.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453336/normal_5ff1ee7dd2529.pdfIn PDF document text
    • http://wixiziz.iblogger.org/giluxurejokigerivajakexu.pdfIn PDF document text
    • http://fepotarugagi.22web.org/kidaroguvonijawibejefika.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403565/normal_5fec35f4c3552.pdfIn PDF document text
    • https://gedimonisesejed.weebly.com/uploads/1/3/1/1/131163996/fe39f4ac.pdfIn PDF document text
    • http://geguxejap.22web.org/acog_pap_smear_guidelines_pregnancy.pdfIn PDF document text
    • http://junumidutuzakox.getenjoyment.net/wobasesirepido.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://budavazej.epizy.com/92314952003.pdfIn PDF document text
    • https://s3.amazonaws.com/fapaga/what_support_do_you_need_to_achieve_your_goals_and_objectives.pdfIn PDF document text
    • http://wuzuvulas.epizy.com/40701898043.pdfIn PDF document text
    • https://s3.amazonaws.com/pisik/vufexovidivumaweta.pdfIn PDF document text
    • https://s3.amazonaws.com/nimuwet/fimireropopenog.pdfIn PDF document text
    • http://bitines.myartsonline.com/what_does_a_simple_tax_return_form_look_like.pdfIn PDF document text
    • https://s3.amazonaws.com/tokit/ap_style_guide_writing_numbers.pdfIn PDF document text
    • http://vumafovixono.rf.gd/lefitirive.pdfIn PDF document text
    • http://zulepafifakixik.epizy.com/lights_out_2016_movie.pdfIn PDF document text
    • http://zupotid.epizy.com/9th_class_english_textbook_2018.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_off0000de7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE7F 5200 bytes
SHA-256: 2fe3e2ce980d26acf9581b271e237022ace49803a6e8620b058867b1f8e5f886
font_01_sfnt_off0000f05b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF05B 10192 bytes
SHA-256: b0f71aad5ee11767cce6def62b60c820f11ddc3c51ee206afeea9fc8684e2ceb