Malicious PDF — malware analysis report

Static analysis result for SHA-256 a58da70e6c6c3873…

MALICIOUS

PDF

71.0 KB Created: 2021-02-22 19:47:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 47e8c4dd98975ba14c4970b36e3c8616 SHA-1: 172e4e592b8114971d4b40228463559426e185d5 SHA-256: a58da70e6c6c3873fa07328c5b33e02e0e994ca2ae799cef0cf1b2c3010864a9
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://maypoin.ru/wix?keyword=johnson+outboards+manuals PDF link annotation
    • http://nasporte1.fun/how_to_differentiate_viral_vs_bacterial_pneumoniaqcejq.pdfIn PDF document text
    • http://my-favshopc.online/zubegb9n5u.pdfIn PDF document text
    • https://cdn.sqhk.co/feripamapuv/geiflHn/mobile_patrol_missouri.pdfIn PDF document text
    • http://7lessons.fun/dozemaritesotixasars5nty.pdfIn PDF document text
    • https://cdn.sqhk.co/buxifuludo/rMDgfGK/bofami.pdfIn PDF document text
    • https://cdn.sqhk.co/mujowofapubi/ibBhhAr/shelter_cove_hilton_head_real_estate.pdfIn PDF document text
    • https://gedofulijul.weebly.com/uploads/1/3/0/7/130775434/5df082bf86e1d.pdfIn PDF document text
    • https://cdn.sqhk.co/lomotutuwe/ijoicjb/how_do_you_play_go_fish_rules.pdfIn PDF document text
    • http://firstreadersclub.com/figure_of_speech_irony_worksheets1vcck.pdfIn PDF document text
    • https://nulivuxod.weebly.com/uploads/1/3/0/7/130776854/954a4aeae5eba1.pdfIn PDF document text
    • https://cdn.sqhk.co/nebinefis/Yhhifij/47316419755.pdfIn PDF document text
    • https://pumazamobu.weebly.com/uploads/1/3/0/8/130874095/1198067.pdfIn PDF document text
    • https://cdn.sqhk.co/jidelugob/iiKShdL/trance_malayalam_movie_amazon_prime.pdfIn PDF document text
    • https://korexabareruwa.weebly.com/uploads/1/3/2/6/132680962/392673.pdfIn PDF document text
    • https://cdn.sqhk.co/vepefilome/b7Rgcic/online_javascript_compiler_repl.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489057/normal_5ffe278741756.pdfIn PDF document text
    • https://xefitopabez.weebly.com/uploads/1/3/4/8/134865339/wekawofilubuxuse.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481411/normal_601856352e082.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/gopuze/best_android_graphing_scientific_calculator_app.pdfIn PDF document text
    • https://s3.amazonaws.com/mukutud/impact_of_globalisation_on_developing_countries.pdfIn PDF document text
    • https://s3.amazonaws.com/ligole/xinijevizebavudizafifibu.pdfIn PDF document text
    • https://s3.amazonaws.com/kelageketisefuv/what_are_examples_of_mortal_sins_in_the_catholic_church.pdfIn PDF document text
    • https://s3.amazonaws.com/xufoxorog/puborazusavitawijipake.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_off0000cde4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDE4 4908 bytes
SHA-256: b043c71efcd309dc09b1526ec3a04659ab55dfe61569e212b21178e1c400cb6f
font_01_sfnt_off0000de49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE49 10016 bytes
SHA-256: 446be5b77f36e641dbdc0607351fafb561fa489a8e19d884046e4cf7d240e979
font_02_sfnt_off000100b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100B1 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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