Malicious PDF — malware analysis report

Static analysis result for SHA-256 6956a28fdb8989c8…

MALICIOUS

PDF

67.2 KB Created: 2021-03-08 04:21:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: ee3c770b1afbe9e336b2583a6f1c4fb8 SHA-1: 7cd2c4f0df27ac5e091b4f5d5a2b607f7d91fc23 SHA-256: 6956a28fdb8989c8a3c7d65ce3eea3b03550a8cd0154be3512d6ca5322b6a248
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://soxebez.ru/wix?keyword=unit+8+test+right+triangles+and+trigonometry+answers PDF link annotation
    • http://guitar.su/kutajugoduzur6wvcd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461751/normal_603f6fc45709b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426941/normal_60135e8c23202.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496597/normal_600f0e9a480f2.pdfIn PDF document text
    • http://bahis-sikayet.com/what_does_the_suffix_lysis_mean_in_medical_termshc9zv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493589/normal_5fda656af4105.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369917/normal_5feef54752209.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382413/normal_600691ffa7ec0.pdfIn PDF document text
    • http://nextauto02.ru/demon_souls_rpg_mod_apksgqah.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476015/normal_5fe3c1ce9a5a8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485005/normal_602b66ba81205.pdfIn PDF document text
    • http://beautysale.site/cb_insights_fintech_250cxhq0.pdfIn PDF document text
    • http://pomirkapa.site/scotts_speedy_green_3000_settings_per_poundwl6f0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lalavuzotijosi.epizy.com/al_quran_only_urdu_translation_mp3.pdfIn PDF document text
    • https://ac3db616-04cb-40f1-8357-c67041f5e20c.filesusr.com/ugd/eda9ba_73b707254ac941c8abdd6fe1679c8481.pdf?index=trueIn PDF document text
    • http://nokizotef.rf.gd/wasabi_sushi_bento_nutritional_information.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4197b78-9c0e-46e0-9797-5b399c7fdacc/75968090739.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/343b352a-575c-4db2-b842-8535d5105c0e/5248257215.pdfIn PDF document text
    • http://jejotatimub.rf.gd/77027691607.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/128fac12-cd34-4acc-b0b9-6a2c3fd85692/the_adventures_of_sherlock_holmes_tv_series_sinhala_sub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/abbd9268-ac84-4039-ba75-05a667c9d803/how_to_use_krups_espresso_machine_xp3208.pdfIn PDF document text
    • http://wasaxotudulolo.epizy.com/98768800580.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_off0000c6f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6F6 5616 bytes
SHA-256: e1b462be77f22af3130fd045f14e1f35d8f21826a9b7f6fa576d907e153c7261
font_01_sfnt_off0000d9f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9F4 10604 bytes
SHA-256: 0c9f770e2b41961a7206ff0e73eb2524973e6526b90fc6571568a6d036d620c9

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