Malicious PDF — malware analysis report

Static analysis result for SHA-256 63347a60e7bafe56…

MALICIOUS

PDF

73.1 KB Created: 2021-02-28 00:28:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: af1346c780a09b835c206585f1d7db72 SHA-1: 7e7e938b00540e0614840d1623a62d6561c76070 SHA-256: 63347a60e7bafe56974b206eba97e9c636852279a59539d79a1ca7a6a0fe080d
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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/award?keyword=hartke+lh1000+used PDF link annotation
    • https://cdn.sqhk.co/sajatanugeg/ieLVFg8/54327727409.pdfIn PDF document text
    • https://ronupajowosoza.weebly.com/uploads/1/3/4/8/134871490/6654160.pdfIn PDF document text
    • https://xiruzavaxukegaf.weebly.com/uploads/1/3/5/3/135324830/pebuzoritelus.pdfIn PDF document text
    • https://fajesafopumusid.weebly.com/uploads/1/3/1/8/131871419/lobufokuduma.pdfIn PDF document text
    • https://cdn.sqhk.co/wemofisejaf/OmjhbYn/80836346789.pdfIn PDF document text
    • http://rosutob.getenjoyment.net/ponapujetanam.pdfIn PDF document text
    • https://cdn.sqhk.co/tatidukigag/ggUQNmd/kosozakofewib.pdfIn PDF document text
    • http://bikomowaxibujoj.medianewsonline.com/78281117882.pdfIn PDF document text
    • http://vatologox.iblogger.org/cerfpa_formation_a_distance.pdfIn PDF document text
    • https://kuxilididid.weebly.com/uploads/1/3/4/3/134387830/c9186.pdfIn PDF document text
    • https://cdn.sqhk.co/buvaboda/aGTfgcn/7640193988.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/bovenotojitowe/birthday_calendar_template_free.pdfIn PDF document text
    • https://s3.amazonaws.com/tevomenil/19047678368.pdfIn PDF document text
    • https://s3.amazonaws.com/jazamerijekufol/24234299554.pdfIn PDF document text
    • https://s3.amazonaws.com/domegagowevag/6468798767.pdfIn PDF document text
    • https://s3.amazonaws.com/fodose/manivivefezoxel.pdfIn PDF document text
    • https://s3.amazonaws.com/gapivegek/sijuravogat.pdfIn PDF document text
    • https://s3.amazonaws.com/pusixa/word_puzzle_worksheets_5th_grade.pdfIn PDF document text
    • http://ribizotujigotok.rf.gd/solenoide_adn.pdfIn PDF document text
    • http://zemoxatovasoga.rf.gd/lewazusetuzisajubarinuxo.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_off0000e3e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3E4 5132 bytes
SHA-256: 70c0e7dd11ccd5d657bb22fe7cff8a18e23f783dc2e6357ad6346a7fac378ea1
font_01_sfnt_off0000f54b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF54B 10044 bytes
SHA-256: daa3300b6d12a3522b80f2f017c5c558cc8bbec487d9475e3b2070e7a04511e6

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