Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c2dd1ed659c6b94…

MALICIOUS

PDF

72.2 KB Created: 2021-02-22 21:41:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: f1950378b168d9b221fff5e409ba7335 SHA-1: 721836b29a9f3700c02470ed26f351b3ecf35526 SHA-256: 6c2dd1ed659c6b945d318245827582ac0dc255d4de3a29b8a1e388f81d7f5974
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/wix?keyword=opera+mini+next+handler+apk+download PDF link annotation
    • https://vezutokabev.weebly.com/uploads/1/3/4/7/134758566/bibiti.pdfIn PDF document text
    • https://kasexesupa.weebly.com/uploads/1/3/1/4/131437862/defejemezezu.pdfIn PDF document text
    • https://cdn.sqhk.co/nivodoruw/1hb8uie/escape_room_the_game_app.pdfIn PDF document text
    • https://togawakavepanef.weebly.com/uploads/1/3/1/1/131163752/wesuguvib.pdfIn PDF document text
    • https://cdn.sqhk.co/kitobanifamo/fTgdVhh/65010237127.pdfIn PDF document text
    • https://tadomowiwelam.weebly.com/uploads/1/3/4/7/134744739/08cf09.pdfIn PDF document text
    • https://cdn.sqhk.co/kukisigafumi/jZM9Lb1/30845667356.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/xenavuxa/scrivere_forma_attiva_e_passiva.pdfIn PDF document text
    • https://s3.amazonaws.com/wupixufekijax/venutesuw.pdfIn PDF document text
    • http://menoziduwuju.epizy.com/canterbury_england_rugby_shirt_size_guide.pdfIn PDF document text
    • http://tanijug.rf.gd/xobitotiku.pdfIn PDF document text
    • https://s3.amazonaws.com/tezude/harbingers_android_tier_list.pdfIn PDF document text
    • http://xizokokov.epizy.com/mukutufokimesewogugire.pdfIn PDF document text
    • https://s3.amazonaws.com/jijumupade/zaxiz.pdfIn PDF document text
    • http://defokovujeganuw.rf.gd/how_to_play_big_stack_poker_cash_game.pdfIn PDF document text
    • http://xuneviwek.epizy.com/42965480585.pdfIn PDF document text
    • https://s3.amazonaws.com/folexapurilowe/guided_by_voices_sweating_the_plague_pitchfork.pdfIn PDF document text
    • https://s3.amazonaws.com/buwosevax/auditing_and_assurance_icai.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_off0000de58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE58 5272 bytes
SHA-256: c8894fd177b1fe663f8c88128e6240989a752a598f6d4813ab149b69e5d1ef03
font_01_sfnt_off0000f024.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF024 10240 bytes
SHA-256: 0f19de4255aff55293cfa0cb12163ad1be9df7c717b5f55c31d704a7a43b8aeb