Malicious PDF — malware analysis report

Static analysis result for SHA-256 366addab52c35cba…

MALICIOUS

PDF

85.4 KB Created: 2021-02-13 11:34:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 77b909b1811a249227875a316550c701 SHA-1: 104f78fff3401f4e82a5ec52310e7a4c875256df SHA-256: 366addab52c35cbace0e4fe3198c19adfd90d63bf139e2b929c5d357f10e3061
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://baarspo.ru/123?utm_term=how+do+you+cite+a+lab+manual+in+mla PDF link annotation
    • https://zikixitifo.weebly.com/uploads/1/3/4/8/134897390/fogavigo.pdfIn PDF document text
    • https://cdn.sqhk.co/roxigeve/MIGidjc/namigudatodusixisejo.pdfIn PDF document text
    • https://cdn.sqhk.co/jaxugaveg/4iaPhcx/warren_city_water_department_phone_number.pdfIn PDF document text
    • https://cdn.sqhk.co/bexamajuw/rwhhehb/archery_target_windsock.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486351/normal_5fe76d3a8824b.pdfIn PDF document text
    • https://cdn.sqhk.co/melipetoluf/gjiDG6X/psx_emulator_pc_windows_8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370778/normal_5fe90477a2356.pdfIn PDF document text
    • https://cdn.sqhk.co/pobopuwubox/hijicyH/jeberilodukulokuxasit.pdfIn PDF document text
    • https://fozabezadako.weebly.com/uploads/1/3/4/6/134639332/a51eca2e.pdfIn PDF document text
    • https://kevanosum.weebly.com/uploads/1/3/0/9/130968994/fa657b46db3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427523/normal_5fea02b836885.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403824/normal_6003e76289b0e.pdfIn PDF document text
    • https://cdn.sqhk.co/wuvupalib/aTrmih3/banikedokiwegokovoxewim.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/mixanaz/mixanukube.pdfIn PDF document text
    • https://s3.amazonaws.com/zuponefi/serufojudodilunu.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_off00011134.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11134 5108 bytes
SHA-256: 78a8cda258e50899f68c48646fade04148f6951166076191e96f3f89393e3312
font_01_sfnt_off00012297.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12297 11284 bytes
SHA-256: 2d4c508f2b8d96b06f367f6836494cd422dd91e1d6033469447aebf41364165c