Malicious PDF — malware analysis report

Static analysis result for SHA-256 9dc35ae85bf69600…

MALICIOUS

PDF

86.7 KB Created: 2021-02-09 10:11:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 7a19866c688634ab868de54637a394e4 SHA-1: f8395f14a619998f87bc3b4e18b4f28eb76d073c SHA-256: 9dc35ae85bf6960017172f449e8071b9959084edf6f2672d9e56d3c58bc04e12
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://jottigo.ru/123?utm_term=letter+of+intent+to+sell+home PDF link annotation
    • http://mnclassis.org/ark_aberration_boss_fight_guidemsmy6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464522/normal_601b30e37d02d.pdfIn PDF document text
    • http://pukoruserega.22web.org/39204862132.pdfIn PDF document text
    • http://idealslimitaly-official.site/suwuwekirazibatiipow.pdfIn PDF document text
    • http://osthondroz.com/angular_ivy_renderer_performance2qmhx.pdfIn PDF document text
    • http://show-visitor.xyz/free_vsco_full_pack_mod_apkh3f0v.pdfIn PDF document text
    • http://bet-info.ru/phased_array_antenna_basics83vit.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/voxulija/matrices_problems_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/vosimalume/dim_sheet_as_string.pdfIn PDF document text
    • https://s3.amazonaws.com/lumixi/bovuzitatifugogoxafinef.pdfIn PDF document text
    • http://pawekixezad.epizy.com/adverbial_form_meaning.pdfIn PDF document text
    • http://xiluwudikipo.epizy.com/13931065991.pdfIn PDF document text
    • https://s3.amazonaws.com/gazitif/91875274952.pdfIn PDF document text
    • https://s3.amazonaws.com/viregujipowuru/anime_slayer_apk_2._2._4.pdfIn PDF document text
    • http://lafeseg.rf.gd/wifizozufolawisokiz.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_off000117a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117A8 4740 bytes
SHA-256: 0321e139e7d7a76085f00f8092bb777e2403079ecf6d9149b0601237405de5b6
font_01_sfnt_off0001279b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1279B 11468 bytes
SHA-256: 8646b14363cb2797356eb8b7d287d2db1eea0aa63766a1d3bdab14ef2cede033