Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1e7f2f52228b47e…

MALICIOUS

PDF

70.0 KB Created: 2021-02-18 20:53:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: fa0f03483e4a62b2caf2bfbb36076d5b SHA-1: 0bc2a1506712f092aa21b481f086e1273c850302 SHA-256: f1e7f2f52228b47e3d1e565c1069591ee14bfa3ca23c9b551e18e550156d25ed
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://jacksth.ru/wix?keyword=backyard+grill+3+burner+gas+grill PDF link annotation
    • http://mazezoda.22web.org/bonefish_mac_s_nutritional_information.pdfIn PDF document text
    • http://therarbooks.com/ropiwuganan8v8u9.pdfIn PDF document text
    • http://pizeval.iblogger.org/how_to_install_a_scroll_saw_blade.pdfIn PDF document text
    • http://experiment.website/416769172a587b.pdfIn PDF document text
    • http://freehookup.xyz/xepesekig8bzg.pdfIn PDF document text
    • https://wunobenera.weebly.com/uploads/1/3/4/8/134887230/9796918.pdfIn PDF document text
    • http://car-den.ru/vajegoluxarelakunoxeiw0ae.pdfIn PDF document text
    • https://vepodiruwa.weebly.com/uploads/1/3/4/3/134374194/8280c.pdfIn PDF document text
    • http://latencfsrt.space/oxford_picture_dictionary_hdijoah.pdfIn PDF document text
    • http://playmarket-online.com/perspectives_intermediatetc9yu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://botemexake.rf.gd/82775250695.pdfIn PDF document text
    • https://s3.amazonaws.com/xisakazelelinim/tekogidasuluwow.pdfIn PDF document text
    • https://s3.amazonaws.com/nonabafat/bach_partita_no_2_allemande_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/tixedujegibex/insect_glaive_guide_mhw_reddit.pdfIn PDF document text
    • https://s3.amazonaws.com/gozifep/warefezorexilixodadibef.pdfIn PDF document text
    • http://sadedegigagivaw.rf.gd/daily_express_sunday_crossword_answers.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_off0000d3ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3AD 5624 bytes
SHA-256: a5d39c63cb9b7cf5663c28c3e47c208bc7983d024a02afa6635eba2026ed98c6
font_01_sfnt_off0000e6e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6E2 10544 bytes
SHA-256: 9f5ec43b161b4a652496e03f8b4d4c869d8eb31d77095cb51aa0413ed4b13a61