Malicious PDF — malware analysis report

Static analysis result for SHA-256 510ac8042721e87b…

MALICIOUS

PDF

73.1 KB Created: 2021-02-26 21:02:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 840038a4bdf23e29e487bd448bd88f98 SHA-1: 9481fa148a3da18eefc292a3cdd19e4bd910f0d8 SHA-256: 510ac8042721e87bc397cb56873dc422360724de69118a20a77edc9760d32173
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://mezovuduw.ru/award?keyword=jlab+earbuds+go+air+manual PDF link annotation
    • http://juwupexutaval.mywebcommunity.org/zipijofokezatufak.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409244/normal_602c1b3e67e62.pdfIn PDF document text
    • http://look-hotel.com/norton_anthology_of_american_literature_shorterrit1w.pdfIn PDF document text
    • http://momarivido.mypressonline.com/how_to_fix_traxxas_nimh_battery.pdfIn PDF document text
    • https://cdn.sqhk.co/nuvexajamu/ciaighZ/radiant_heat_boiler_system.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373985/normal_5ffd62dba40de.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485568/normal_6016c1546f643.pdfIn PDF document text
    • http://tohld.in/magnus_chase_book_1_chapter_summaryuwsrd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483610/normal_60004df6208b5.pdfIn PDF document text
    • http://tixesikixux.mygamesonline.org/94626778090.pdfIn PDF document text
    • http://bafiselavanebep.mywebcommunity.org/zegalipuvutadubokejukevi.pdfIn PDF document text
    • http://avtovishki-msk.ru/how_to_use_ellipses_with_a_question_markuf8j9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://roveramo.atwebpages.com/46017570873.pdfIn PDF document text
    • https://s3.amazonaws.com/jasadavebaga/80672661443.pdfIn PDF document text
    • http://wonanikapudidak.atwebpages.com/diablosport_intune_i1000_vehicle_list.pdfIn PDF document text
    • http://rususekobijo.myartsonline.com/how_do_you_bluetooth_a_blueparrott_headset.pdfIn PDF document text
    • https://s3.amazonaws.com/nutanigonu/11210764196.pdfIn PDF document text
    • https://s3.amazonaws.com/gagagakigibapo/fur_elise_piano_sheet_music_notes.pdfIn PDF document text
    • https://s3.amazonaws.com/kosamupim/97477313448.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_off0000df9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF9B 5276 bytes
SHA-256: 5885fed65527e8c603f2a2cc9adc8e5b2125a771d233212f7fd63de570772f35
font_01_sfnt_off0000f16e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF16E 10932 bytes
SHA-256: 5de01e4c413b9ecec0d04192bbfeb8ac760872e4c4f3339c45d424258445ed92