Malicious PDF — malware analysis report

Static analysis result for SHA-256 cec6e18425492934…

MALICIOUS

PDF

78.1 KB Created: 2021-04-10 14:45:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 617b12987971135a5d36a3adea60a8c0 SHA-1: 5d3214c5a0bbbd8e2133d2f5fb34a4f31a329bb8 SHA-256: cec6e1842549293445560115b01b50612e09422018b9a55ccf65911039723926
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://jumiwimov.ru/strik?utm_term=best+cheap+front+load+washer+and+dryer PDF link annotation
    • https://nezuvaju.weebly.com/uploads/1/3/0/9/130969963/1905949.pdfIn PDF document text
    • https://cdn.sqhk.co/wobimore/viajgjh/bird_papa_bubble_crush.pdfIn PDF document text
    • http://dotavulilego.mypressonline.com/refractive_index_of_glass_block.pdfIn PDF document text
    • http://waparudadip.mywebcommunity.org/74094798234.pdfIn PDF document text
    • http://bokaxakoz.sportsontheweb.net/last_of_the_mohicans_free_online_streaming.pdfIn PDF document text
    • https://gonagulinifuf.weebly.com/uploads/1/3/1/8/131856247/dogetofutokabewafera.pdfIn PDF document text
    • https://fotijaxak.weebly.com/uploads/1/3/4/1/134108731/wixiseledofofa_suwurekaza_pamesopuvegave_neboremujaponi.pdfIn PDF document text
    • https://cdn.sqhk.co/raxoxawupej/e3jbjf6/nuwalugugetudepof.pdfIn PDF document text
    • https://domisupufiz.weebly.com/uploads/1/3/5/3/135316273/levilox.pdfIn PDF document text
    • https://dosujuge.weebly.com/uploads/1/3/4/3/134305565/tolotevetaze-moboweja-tatatokar-zasawaraputumo.pdfIn PDF document text
    • http://kugewezebuvigiw.mygamesonline.org/nazajefujugojotewalevoger.pdfIn PDF document text
    • http://vuwadezizubem.22web.org/lofojunuru.pdfIn PDF document text
    • http://setefigidoral.iblogger.org/herringbone_subway_tile_sheets.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/lomogas/netflix_compatible_android_9.pdfIn PDF document text
    • https://s3.amazonaws.com/pubopelej/82721017787.pdfIn PDF document text
    • http://zirutabu.myartsonline.com/best_million_candlepower_spotlight.pdfIn PDF document text
    • http://tevaluzax.atwebpages.com/free_download_eraser_pro.pdfIn PDF document text
    • http://fepadegan.epizy.com/mitosis_worksheet_answers_matching.pdfIn PDF document text
    • http://tixofimisupabev.onlinewebshop.net/42613635515.pdfIn PDF document text
    • https://s3.amazonaws.com/lomuper/bass_booster_free_pc.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e75f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE75F 5228 bytes
SHA-256: 72435c9ce4f0a5e28eaa5d803d3bc49f20b95356a783aeff88108ab858eded76
font_01_sfnt_off0000f932.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF932 10492 bytes
SHA-256: 4302f862902539f216d0e3730a46c08a43a447f49a0f7ec491452a1a1fe53c2c
font_02_sfnt_off00011d23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D23 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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