Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a6cc94fc67b45cd…

MALICIOUS

PDF

71.5 KB Created: 2021-02-28 05:08:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 51a01cf1a412a3b830f0678def7dde10 SHA-1: 850f34a05fbcecbd32b1a724bc0bb0c71c540f13 SHA-256: 7a6cc94fc67b45cdd377246d9555efbee7c984a784736f7191e2e9776680ce65
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://zajinet.ru/123?utm_term=how+to+connect+to+wd+my+cloud+on+mac PDF link annotation
    • https://cdn.sqhk.co/nilulugaj/gjcgf1R/45369132075.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484154/normal_60043ee934823.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485822/normal_5fdc85e4ec8cc.pdfIn PDF document text
    • http://nogurufegu.mygamesonline.org/rhetorical_devices_examples_quiz.pdfIn PDF document text
    • https://xexidizufom.weebly.com/uploads/1/3/4/5/134508107/solokuzarosolu.pdfIn PDF document text
    • https://cdn.sqhk.co/pabelemusib/ggfq01D/duck_hunter_funny_game.pdfIn PDF document text
    • https://cdn.sqhk.co/javeduner/5zyg2r3/85807579235.pdfIn PDF document text
    • http://gakagebir.mypressonline.com/62826767448.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387033/normal_5fc64438ccb21.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gasiton.rf.gd/the_last_song_cast_miley_cyrus_lyrics.pdfIn PDF document text
    • http://kavibajegis.onlinewebshop.net/metodologia_de_la_investigacion_cuantitativa_segun_autores.pdfIn PDF document text
    • http://supijidexigoba.epizy.com/49376356625.pdfIn PDF document text
    • http://wemixapaw.epizy.com/24086199940.pdfIn PDF document text
    • http://viketekijibis.rf.gd/83621996753.pdfIn PDF document text
    • http://negamew.rf.gd/what_dish_package_has_hallmark_channel.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_off0000dd32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD32 4964 bytes
SHA-256: 6fe5b1640240145bb8b6b9e541731d66219e6c993507cf972dec4888bb3c080a
font_01_sfnt_off0000ee18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE18 10228 bytes
SHA-256: 52bb63699a6cb34358553ab89e8baaeae4831a04aa739d29409839ff502ff4fb