Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6bd3833424b1de5…

MALICIOUS

PDF

68.2 KB Created: 2021-02-24 06:44:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 3624ac90211ca669253fe2dcc7e2614f SHA-1: b1b25dd7c5b88974c99b584161f2368af7c02a82 SHA-256: b6bd3833424b1de551124cd0fd8c2bb1768a38cc8ef8d88512737fc9da8e9d79
206 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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=filecollection+org+pdf+signing+naturally+download PDF link annotation
    • http://setovewurepenu.22web.org/50549844390.pdfIn PDF document text
    • https://vigodabazo.weebly.com/uploads/1/3/4/8/134872933/1734102.pdfIn PDF document text
    • https://cdn.sqhk.co/gubogezemazo/rMhfqJX/lullaby_songs_relaxing_baby_music_mp3_free_download.pdfIn PDF document text
    • https://kokilanoru.weebly.com/uploads/1/3/4/0/134012510/xuwagu.pdfIn PDF document text
    • https://cdn.sqhk.co/zixajofazadi/EfgfihP/faban.pdfIn PDF document text
    • http://nuraramibifowom.22web.org/tegabupapaxitokig.pdfIn PDF document text
    • https://guxitubekin.weebly.com/uploads/1/3/4/2/134267073/fovesorevaveraluxe.pdfIn PDF document text
    • http://mebutef.22web.org/images_de_lorganisation_gareth_morgan.pdfIn PDF document text
    • https://cdn.sqhk.co/zezinojox/bnRgg1k/bapenale.pdfIn PDF document text
    • http://itclick.pro/31808390895vsxqy.pdfIn PDF document text
    • https://notefusiwedamap.weebly.com/uploads/1/3/4/8/134872173/funitonawimewi.pdfIn PDF document text
    • https://cdn.sqhk.co/rekubapapup/japMji6/jolted_definition_in_spanish.pdfIn PDF document text
    • https://cdn.sqhk.co/wotirixa/hjgjcU9/windows_server_2019_remote_desktop_services_licensing_crack.pdfIn PDF document text
    • http://rifikelatukuw.iblogger.org/bollywood_movies_full_free.pdfIn PDF document text
    • https://gebawifu.weebly.com/uploads/1/3/1/4/131483167/dakujuzube.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nirirojigupe.epizy.com/hiatus_hernia_diet_sheet_uk.pdfIn PDF document text
    • https://s3.amazonaws.com/besafefaf/back_wars_mod_apk.pdfIn PDF document text
    • http://patubakofizoz.epizy.com/43367216196.pdfIn PDF document text
    • http://sapakebozo.rf.gd/aluminum_sheet_metal_finishes.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_off0000cc92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC92 5472 bytes
SHA-256: 2341df22b5820dc5607b7cc4ea1976ddc5d1978deb4c0dd9ab58d654e59da914
font_01_sfnt_off0000df5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF5B 10540 bytes
SHA-256: 8cad51689a94ec59e8dad21d31c700b7337a9529774a160fe007a922a687f36a