Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd00811cea240624…

MALICIOUS

PDF

69.9 KB Created: 2021-02-11 19:23:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: b28746aab16bd1ab56789d58727adf82 SHA-1: 74bff4cfa30d27c8d3ec9c482802a736bcbe324f SHA-256: cd00811cea240624976004c950e3afc3152e283fbfe7475860a7dfb4d7e09bf6
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://leonvi.ru/wix?keyword=meaning+in+hindi+google PDF link annotation
    • https://cdn.sqhk.co/xumesapaxoku/idgigha/kabanetukek.pdfIn PDF document text
    • http://daniele.store/crash_bandicoot_ps2_iso_android52p28.pdfIn PDF document text
    • http://shoop-ff.ru/wilofojqd6l0.pdfIn PDF document text
    • http://lnstagram-copyright-confirms.com/teamspeak_3_android_apk_crackedjrkl6.pdfIn PDF document text
    • https://nafogoke.weebly.com/uploads/1/3/4/7/134776139/rovenufajodidovobo.pdfIn PDF document text
    • http://reawolt.online/3147481251716kvz.pdfIn PDF document text
    • https://cdn.sqhk.co/najiligopej/Ygfhjgd/rainbow_stacking_rings.pdfIn PDF document text
    • http://dmgameplan.com/264526935760yiv2.pdfIn PDF document text
    • http://rollernefrit.xyz/348390941834xksk.pdfIn PDF document text
    • http://seomagnat1.online/fast_launcher_pro3q5l1.pdfIn PDF document text
    • http://gsmall.space/41276747928mdbvq.pdfIn PDF document text
    • http://dirtygirl.fun/pojefab4grn6.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/bivanud/android_games_support_ps3_controller.pdfIn PDF document text
    • https://s3.amazonaws.com/miledu/bimco_supplytime_2005_form.pdfIn PDF document text
    • https://s3.amazonaws.com/pojikovewijeja/chogada_tara_ore_chabila_tara_ringtone.pdfIn PDF document text
    • http://zexukojol.rf.gd/rotodujafivoz.pdfIn PDF document text
    • http://gidubivej.rf.gd/chronological_resume_template_example.pdfIn PDF document text
    • https://s3.amazonaws.com/jewizopukuni/xefitebegimo.pdfIn PDF document text
    • https://s3.amazonaws.com/rozebofukixus/timeline_of_life_events_template.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_off0000c9c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9C8 4816 bytes
SHA-256: 7cf7405dee4245314f2b641eceebe62fa5dc982039e432b9b61eb36816a24b46
font_01_sfnt_off0000da30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA30 15244 bytes
SHA-256: a95634fb89db9bbfcc3d0c3210e6cb165c65c41b0d7fe947560c124dc2867c1d