Malicious PDF — malware analysis report

Static analysis result for SHA-256 0dcfb602369f10c5…

MALICIOUS

PDF

71.9 KB Created: 2021-02-16 20:29:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 8a4435ee37313c68ada681f306def1c4 SHA-1: 6b790016a0d725fc70efda169a213a06bd216e16 SHA-256: 0dcfb602369f10c541776e3c9f7abdd57c1c0dbaa385a98035a8a93fac8b6caf
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://druttle.ru/wix?keyword=chapter+13-18+catcher+in+the+rye PDF link annotation
    • https://losanuritajog.weebly.com/uploads/1/3/4/7/134730792/fifagawilu.pdfIn PDF document text
    • http://blubadgehelp.net/textos_em_ingles_para_6_anobkbys.pdfIn PDF document text
    • http://itactical.xyz/msts_addons_free4mj6i.pdfIn PDF document text
    • http://copyrightreports.com/pewibetowufenurujb2r8.pdfIn PDF document text
    • https://cdn.sqhk.co/duxadikoti/ihahcjg/kaplan_mcat_practice_test_vs_aamc.pdfIn PDF document text
    • https://cdn.sqhk.co/savimatuv/ecjBhjV/difepe.pdfIn PDF document text
    • http://damvglaz1.xyz/852304372451a6pq.pdfIn PDF document text
    • https://cdn.sqhk.co/nupopobax/5hh9Lmq/99571931216.pdfIn PDF document text
    • http://gratoraama.website/power_pressure_cooker_xl_8_qt_partsgulem.pdfIn PDF document text
    • http://arm-watch1.club/billiard_free_game_apk43ea3.pdfIn PDF document text
    • https://cdn.sqhk.co/sixitigoxeto/Xbje9jb/9235994313.pdfIn PDF document text
    • https://joxenunufob.weebly.com/uploads/1/3/1/6/131606789/tosuduxafopeg-levewezig.pdfIn PDF document text
    • https://xitapazutirubej.weebly.com/uploads/1/3/4/8/134882608/19e9dab156.pdfIn PDF document text
    • http://trastenmyqort.online/33755136553nnu48.pdfIn PDF document text
    • https://cdn.sqhk.co/pigujoxexate/G5lihjc/hamster_life_hack_apk.pdfIn PDF document text
    • http://ins.expert/gifiveralanuse67qdj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/sojebelevenex/tuwudisuguxota.pdfIn PDF document text
    • https://s3.amazonaws.com/ronatiduzoxij/creating_guided_tours_servicenow.pdfIn PDF document text
    • https://s3.amazonaws.com/kiremefegonar/56590823999.pdfIn PDF document text
    • https://s3.amazonaws.com/xifabilejilab/c_e_c_informatica_porto_velho.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_off0000ddda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDDA 5260 bytes
SHA-256: f85c195177740d13f57f28b250b91db355748ded9984200b22d3ed7a3958045c
font_01_sfnt_off0000efca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFCA 10140 bytes
SHA-256: 4e3c85379e7d6a93be6e8f5ce864fead11bc51f584b56e86c532b6ad69164ea3

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