Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d04d6f047004b68…

MALICIOUS

PDF

68.0 KB Created: 2021-02-14 22:54:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 90d2421059dd78fca0ddf3492e3dfda0 SHA-1: a5509114af2d0c62dab69616e8bd9ed2c33cb972 SHA-256: 2d04d6f047004b680423d4968502c813fb18d286148a050f94d4fe7f0422d02d
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://leonvi.ru/wix?keyword=cpm+geometry+chapter+4+answers PDF link annotation
    • https://vafopizinenited.weebly.com/uploads/1/3/4/4/134480139/tolepeporawet.pdfIn PDF document text
    • http://googsnat.space/yorkie_breeders_in_ohiopd8k6.pdfIn PDF document text
    • http://dabuvelejedox.22web.org/99258523214.pdfIn PDF document text
    • http://blockingscenery.com/canvas_business_model_book5zsfh.pdfIn PDF document text
    • https://sipinawuzukefo.weebly.com/uploads/1/3/1/4/131410227/renapipu.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/ratixifo/can_t_new_apple_watch_faces.pdfIn PDF document text
    • https://s3.amazonaws.com/ragejufa/biotech_executive_summary_template.pdfIn PDF document text
    • https://s3.amazonaws.com/woxojuxafopuv/alien_shooter_full_version.pdfIn PDF document text
    • https://s3.amazonaws.com/vetamedisoz/bovos.pdfIn PDF document text
    • https://s3.amazonaws.com/boduxatavepe/25536090778.pdfIn PDF document text
    • https://s3.amazonaws.com/topipovikapari/50734007435.pdfIn PDF document text
    • http://pimorem.epizy.com/86599936561.pdfIn PDF document text
    • https://s3.amazonaws.com/padosumifubobo/53313031876.pdfIn PDF document text
    • https://s3.amazonaws.com/lorugipopuxe/wejuwuvidonibosad.pdfIn PDF document text
    • https://s3.amazonaws.com/lekizopiloref/ananya_birla_circles.pdfIn PDF document text
    • http://pamapubosozule.epizy.com/gift_certificates_templates_libreoffice.pdfIn PDF document text
    • https://s3.amazonaws.com/wofaxil/69893042839.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_off0000cd73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD73 5504 bytes
SHA-256: b89a6520ec10736d99ef31cb30125a681e0b14dd587cc5d9ca5974b792ac24c6
font_01_sfnt_off0000e01f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE01F 10072 bytes
SHA-256: 1a7a141dafcddb9e29af38b01e74b99be09276b3fdeac18f518eb85933cdbb6e