Malicious PDF / .VIR — malware analysis report

Static analysis result for SHA-256 c41e668e8fc72ce3…

MALICIOUS

PDF / .VIR

675.2 KB Created: 2024-01-20 11:52:27 Authoring application: SWFTools First seen: 2024-05-12
MD5: f5829a4c67797f608631e0bbc908d869 SHA-1: 6b95e8902ccf32a993d1c6e8db10451393a0dc51 SHA-256: c41e668e8fc72ce3176bf8807ffbb1b187a7057916fb57057368a116d89f6352
216 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7620

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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.
  • Clickable PDF combines external action with parser-evasion structure high PDF_ACTION_PARSER_EVASION
    PDF has an external clickable URI together with object graph or xref structures that make parsers disagree, such as divergent duplicate objects, parser divergence, or xref offset mismatch. That combination is stronger than a plain link: the document is both an outward-action carrier and a parser-confusion/evasion sample.
  • 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://schinsleder.nl/https://domosapi.online/wp-content/uploads/2024/03/nezezoteruzelugodeti.pdf In PDF document text
    • http://www.nudesirens.com/cgi-bin/at/out.cgi?id=35&tag=toplist&trade=https://falectin.online/wp-content/uploads/2024/01/1394752.pdfIn PDF document text
    • https://btceth2.com/go.php?gourl=https://5.imimg.com/data5/SELLER/Doc/2024/3/401332444/CI/AT/LD/216829993/bamuwomazutabejalus.pdf&id=4821In PDF document text
    • https://www.bassfeld-gmbh.de/frame.php?url=https://uploads-ssl.webflow.com/65f00346df6a2e0ba516f40e/65f7553ac6fd189594ffb6f6_pizifunavipukawu.pdfIn PDF document text
    • http://www.arrowscripts.com/cgi-bin/a2/out.cgi?id=66&l=bigtop&u=https://assets.website-files.com/65effc3b050e380d3c7b676a/65f7492aa05c1a629178ae80_42377976559.pdfIn PDF document text
    • https://pornude.net/deli/cgi/out.php?slug=big-boobed-ava-addams-takes-stiff-pole-for-delight&url=https://assets.website-files.com/65f0329d8ea3c917f4d0bb67/65f743faf8742efcb83569e7_79800082247.pdf&link=gallery&force_template=content_pageIn PDF document text
    • http://sdam-snimu.ru/redirect.php?url=https://5.imimg.com/data5/SELLER/Doc/2024/3/401332007/WB/TT/YA/216829792/zezezotigoxipi.pdfIn PDF document text
    • http://www.namgu1365.kr/main/go_url.jsp?sido=https://tomabuno.online/wp-content/uploads/2024/02/2566.pdfIn PDF document text
    • http://www.max-visible.com/linkcounter.php?ziel=https://assets.website-files.com/65f03c1adf9d6d64858c8deb/65f745dedecc52c44ba9ab61_32461467393.pdf&check=73In PDF document text
    • https://www.icefestivalharbin.com/go?url=https://5.imimg.com/data5/SELLER/Doc/2024/3/401323098/AQ/SP/ZC/216820048/99981021526.pdfIn PDF document text
    • http://tadashi-web.com/ys4/rank.cgi?mode=link&id=14617&url=https://img1.wsimg.com/blobby/go/caa3c4a6-baa0-40d0-a480-29b4b0fad2fe/downloads/55995408141.pdfIn PDF document text
    • https://zadimanupoxine.xeltuve.com/12202390472412446429347867?zusepomiwufetigaduvezorepidoserolixunejomikisomafonivaniraz=gifixawuvakovabukitinaboxanidurujowujadofiwegirikufolarajanesopukerukodijijixisukunirugaviniserarizijepifumefazobokubarujidepusarivamuwisobatililataduxokukidaribaluxetomosuranaxutalekerirasakesigufinurabo&keyword=poem+of+lament+crossword+answer&xoditotegimisufedukibutusenadifanosozubirenupafitanefofufunopuzobefalifinema=rasokitafanalorokosorutuxetevubitupufumusomobipapebuxidivaborasezaninozuxagasejagaxuwimuvoxesazopegejulalumaboIn PDF document text
    • https://zadimanupoxine.xeltuve.com/12202390472412446429347867?zusepomiwufetigaduvezorepidoserolixunejomikisomafonivaniraz=gifixawuvakovabukitinaboxanidurujowujadofiwegirikufolarajanesopukerukodijijixisukunirugaviniserarizijepifumefazobokubarujidepusarivamuwisobatililataduxokukidaribaluxetomosuranaxuPDF link annotation
    • https://zadimanupoxine.xeltuve.com/12202390472412446429347867?zusepomiwufetigaduvezorepidoserolixunejomikisomafonivaniraz=gifixawuvakovabukitinaboxanidurujowujadofiwegirikufolarajanesopukerukodijijixisukunirugaviniserarizijepifumefazobokubarujidepusarivamuwisobatililataduxokukidaribaluxetomosuranaxutalekerirasakesigufinurabo&keyword=poem+of+lament+crossword+answer&xoditotegimisufedukibutusenadifanosozubirenupafitanefofufunopuzobefalifinema=rasokitafanalorokosorutuxetevubitupufumusomobipapebuxidiPDF link annotation
    • 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://dejavu.sourceforge.netIn extracted file (font_00_sfnt_off000a3b4a.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off000a3b4a.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000a3b4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA3B4A 11004 bytes
SHA-256: adb7807b86556f75ea6ab1f08825ca79b161466a947a06aabe769337ea4d2a43
font_01_sfnt_off000a54fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA54FC 15948 bytes
SHA-256: 6ac6ae376841c79ff42935169812a0705d4f66f462f3fc675109c1c5e670e4ea