Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fb82ddfec23bdbe…

MALICIOUS

PDF

80.1 KB Created: 2021-02-13 14:05:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 203be052a916cf499ce2d0796a038660 SHA-1: e179c0346657b6096afa2dbaa52d881130dcdedd SHA-256: 1fb82ddfec23bdbeb6ea39bc3578847caf170978a73c72699e4c2e3c48dc5803
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://seumenha.ru/aws?utm_term=ffxiv+cul+desynth+guide PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4416653/normal_600d700af370d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416513/normal_6012eac7216de.pdfIn PDF document text
    • http://penaleduduzib.iblogger.org/belle_princess_coloring_page.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371788/normal_5ff183872feb0.pdfIn PDF document text
    • http://circleshtang.xyz/3646297577396uri.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470038/normal_5fc996eaea926.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kemufare.epizy.com/intel_82579_gigabit_ethernet_phy_datasheet.pdfIn PDF document text
    • https://s3.amazonaws.com/jagux/example_letter_writing_formal.pdfIn PDF document text
    • http://ruwapebubori.epizy.com/92029139818.pdfIn PDF document text
    • https://s3.amazonaws.com/goveruduzewoxu/homophone_worksheets_for_grade_3.pdfIn PDF document text
    • https://s3.amazonaws.com/fonazuzixagizir/vavikuvulojimupugeso.pdfIn PDF document text
    • https://s3.amazonaws.com/sinamozagemoger/creating_drill_down_reports_in_ssrs.pdfIn PDF document text
    • https://s3.amazonaws.com/lomogas/accidents_reported_near_me_now.pdfIn PDF document text
    • http://xebowuruno.epizy.com/83655909088.pdfIn PDF document text
    • https://s3.amazonaws.com/xidazeze/ponokesevosukisebuvakase.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_off0000fead.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEAD 5164 bytes
SHA-256: c8ca58397ffa18de664ae32962bdbd10094454d7ac2b424bb82554ce0ac735db
font_01_sfnt_off00011058.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11058 10364 bytes
SHA-256: b53bf9e2630e2c84d32b8a364ca5f1b62bf8b4cc3a1069b41c36c21d2c6db06e