Malicious PDF — malware analysis report

Static analysis result for SHA-256 2018e92eee18c785…

MALICIOUS

PDF

71.0 KB Created: 2021-02-11 17:24:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: d663a6245581e0863d4fe1a798afdbdb SHA-1: e3959de33425fd0072e436aafd70d327734058d2 SHA-256: 2018e92eee18c785bc6f4eb09eee0d29fb3b89c13a78dfb2ffe6d5ef70e54645
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jottigo.ru/wix?keyword=little+bi+peep+parents+guide PDF link annotation
    • https://fupelesanu.weebly.com/uploads/1/3/1/6/131606305/nuligavokuxenovevo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387218/normal_600fcc6077fc2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465935/normal_5fd34af6c473c.pdfIn PDF document text
    • https://cdn.sqhk.co/zanudiwageg/AUThjfD/juxidugikakonaxunu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416125/normal_6017163c70e73.pdfIn PDF document text
    • https://giberala.weebly.com/uploads/1/3/5/3/135306284/a2d35.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/xifabilejilab/axolotl_baby_care_sheet.pdfIn PDF document text
    • http://bobupugarini.epizy.com/50816594473.pdfIn PDF document text
    • https://s3.amazonaws.com/jivagajamav/8540496580.pdfIn PDF document text
    • http://vetuvawefaxuta.rf.gd/cm_security_antivirus_apk_uptodown.pdfIn PDF document text
    • https://s3.amazonaws.com/fibesezati/tipevedujaraf.pdfIn PDF document text
    • https://s3.amazonaws.com/forupokisip/gst_authorised_signatory_letter_format_for_partnership.pdfIn PDF document text
    • http://turijebudeta.rf.gd/bulgarian_phonetic_windows_10.pdfIn PDF document text
    • https://s3.amazonaws.com/xixonu/63041986428.pdfIn PDF document text
    • https://s3.amazonaws.com/vovabagubajegeb/fofazomajineladu.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagoba/leviathan_eater_of_worlds_raid_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/rozebofukixus/baxikejivivozatezi.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_off0000d99e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD99E 5208 bytes
SHA-256: c31be825f3f371a6774082f3efbd08da4ceac528a756b5cbbea54d166d8e90f2
font_01_sfnt_off0000eb58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB58 10324 bytes
SHA-256: 7c495b68c05fdd730788410e1bbc0466a04f6250412cfd9741f1bdcedf353151

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