Malicious PDF — malware analysis report

Static analysis result for SHA-256 be33c2f7f45da689…

MALICIOUS

PDF

82.1 KB Created: 2021-04-16 07:41:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 00e956a0aa99fdd88831f584915e40ef SHA-1: db17b55fe2796f708d9a6a30ade4bd391c260741 SHA-256: be33c2f7f45da689e0f7e4be020b75fbe4a26c7063ef0274c52c54d837df4ed2
126 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9995

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://jottigo.ru/strik?utm_term=how+to+get+self+regulation PDF link annotation
    • http://world-wild-shop.com/my_life_next_door_sequeljzibv.pdfIn PDF document text
    • http://profapp.pro/has_voyager_2_left_our_solar_systembsq7g.pdfIn PDF document text
    • http://zuvels.xyz/fall_guys_ultimate_knockout_crack_download_freedkchg.pdfIn PDF document text
    • https://cdn.sqhk.co/wavudasawete/ijFYifM/83249323322.pdfIn PDF document text
    • http://xivoxuvawet.iblogger.org/fonusuxikekufibuxogewup.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416512/normal_600c5e9ae5942.pdfIn PDF document text
    • http://tacfitproducts.com/robocopy_orden_para_copiar_archivos2cj0k.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427538/normal_603cf847cff0e.pdfIn PDF document text
    • http://dipenoguzel.sportsontheweb.net/zagozojelaxebenigujabobad.pdfIn PDF document text
    • https://cdn.sqhk.co/mukibusu/JdPicjd/76574831960.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484995/normal_6040a92b4ddc3.pdfIn PDF document text
    • http://numberoone.xyz/what_is_the_difference_between_zeus_and_athena67jet.pdfIn PDF document text
    • https://cdn.sqhk.co/rufomezin/bbntYJw/moneygram_uk_online_chat.pdfIn PDF document text
    • http://50offshop.pro/ilahi_fon_mzikleri_mp3_indir_dur86bhy.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452171/normal_5ffe435aa2864.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459777/normal_6036c560e102a.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
    • http://weniled.epizy.com/zomato.pdfIn PDF document text
    • http://wurebosuloxu.myartsonline.com/11978741360.pdfIn PDF document text
    • http://najukelosuned.myartsonline.com/nixezezupujipakadefonuz.pdfIn PDF document text
    • http://fozipifi.epizy.com/tisibatukinesufunik.pdfIn PDF document text
    • http://nuzowudip.rf.gd/topazoxobigi.pdfIn PDF document text
    • http://rasunafosav.epizy.com/verore.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f6f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6F7 4872 bytes
SHA-256: 01ecc87cfddcaeec91d2f717272e394a0279e7913a0bb864371d5162da9e1706
font_01_sfnt_off000107a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107A5 10860 bytes
SHA-256: cbfee81fb4944ab1eb883353fba7ec3a3b7ba6486eb61a265cc686c18a04f5e3
font_02_sfnt_off00012ca0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12CA0 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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