Malicious PDF — malware analysis report

Static analysis result for SHA-256 720dccb007816c76…

MALICIOUS

PDF

76.3 KB Created: 2021-03-05 07:16:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 33809fa3201063539ccc80139016779f SHA-1: cb2d0c980911befd1a7af80d18da27d0d7e78258 SHA-256: 720dccb007816c76810eb7623747d38bd415bb7cc2a6a01196593b7a683f12bf
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded URLs and is flagged by multiple heuristics, including ML and ClamAV, as malicious. The document body, though heavily obfuscated, suggests a lure related to 'The white tiger netflix review'. The presence of numerous external URIs, including a link farm on disposable hosting, indicates an attempt to redirect the user to potentially malicious sites for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9983

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
  • 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.
  • 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://dugedepap.ru/award?keyword=the+white+tiger+netflix+review PDF link annotation
    • http://rolivazugatar.scienceontheweb.net/71942180202.pdfIn PDF document text
    • http://airet.space/excel_vba_range_variable_type_mismatchyws4n.pdfIn PDF document text
    • http://mantenancie.com/online_photo_frame_printing_chennaihkeia.pdfIn PDF document text
    • http://simopuvoramawu.mywebcommunity.org/22280791190.pdfIn PDF document text
    • http://natur-green.fun/midirufarujagigi70l.pdfIn PDF document text
    • http://sun-italy.space/what_does_the_ok_symbol_mean_in_japanwqo1y.pdfIn PDF document text
    • http://goproits.com/best_android_game_emulators_for_pc41m6g.pdfIn PDF document text
    • http://procripton.com/boost_your_vocabulary_1_free_downloadlevvv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421944/normal_5fec09cb7b77a.pdfIn PDF document text
    • http://jedilinosur.mywebcommunity.org/2008_jeep_wrangler_wiper_motor_replacement.pdfIn PDF document text
    • http://1freedom.space/67568695715v29bm.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464082/normal_5fdd6c167b15c.pdfIn PDF document text
    • http://iuts.space/94563752695jhpo3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://9170d309-caca-4186-8987-bf6b40ce219c.filesusr.com/ugd/baef12_1c066bb602d14530aa7cfd921ed50de3.pdf?index=trueIn PDF document text
    • http://belibivizonojo.myartsonline.com/fender_mustang_iii_100w_amp_review.pdfIn PDF document text
    • https://b01ec662-dec5-4f54-b977-8708717d6054.filesusr.com/ugd/07e02c_6757dbe852d048dc9c4c0a2bc46fd0e1.pdf?index=trueIn PDF document text
    • https://f499a9ea-5579-4d3c-a180-ba191067f9b7.filesusr.com/ugd/34ec99_41d0c54443294b7ebe3d9d0c52f96e3f.pdf?index=trueIn PDF document text
    • https://fdb0147f-387d-4908-9c93-1ccdb5bf775f.filesusr.com/ugd/aea2e0_45bb7cad84da44ee85ed37605d0eb22e.pdf?index=trueIn PDF document text
    • http://lawewil.atwebpages.com/canoscan_lide_210_software_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a6f04c83-c4ea-42f6-a270-e71e2b009294/vuvovufudapo.pdfIn PDF document text
    • https://8c1dc56a-a131-4b43-acff-3635b9115217.filesusr.com/ugd/90423f_319c27796b4245639e9b7fb23f5c55ff.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/26b4ed0d-eaea-440c-a6dd-eab5f5d44419/19814221353.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f23e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF23E 4812 bytes
SHA-256: 40d5b361c0355e75f64a2ce46f6cbba13ad5fc759d457edd1fa2b85f491b509b
font_01_sfnt_off000102b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102B7 10240 bytes
SHA-256: e30f395ada65f486d63dca6af714ce2df7fa887f7a1c5fa4e6e5e52600a23f47

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