Malicious PDF / .VIR — malware analysis report

Static analysis result for SHA-256 58742e9dc2a7e757…

MALICIOUS

PDF / .VIR

308.9 KB Created: 2023-10-18 00:59:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2024-04-16
MD5: a58f5ccd334cecbd4a13d2c8aeba6edb SHA-1: 8c1859b1e1c1d10e8a12129d7075b1a82c8542e7 SHA-256: 58742e9dc2a7e7577db99d21eb22316c3d9c4d3f0cea850109eddafb1382ce64
241 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9764

Heuristics 8

  • 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.
  • PDF advertises pirated movie streaming/download medium PDF_PIRACY_STREAMING_LURE
    PDF rendered text advertises free full-movie streaming or download using piracy-brand names or a 'full movie + download/free/watch' intent phrase — recovered after folding the styled Unicode confusables the campaign uses to hide those keywords from plain-text detection. These are disposable SEO-spam carriers that route users to malvertising, fake-player, and scam pages; the PDF itself is inert.
  • 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://zefonapurakago.yftejum.com/76923333745142923700956690?mumosodugagofukeguxusexiketanebakuwajutoreganerozizem=tixusopigozipibujinukodulopisufufokovelopemozakenabobotigadidivojifakeduwekujugakuzamojubusijepefupojojifiwunusojofudixemuwimagubibijoduwewudakudovuduroruposiloxapizoviravidutamugimamasimevexifonoladupafizumive&keyword=clear+and+present+danger+book+free+download&molipovotoxikejukodipurojusuwuvavojuditamiweresijatatinewezibaverumude=fulifefupafipapenegokezolubudirevekagekebubisexexefisufesemuxumimenuzilexapebetusikofumevutadijipaximetuniluxofujel In PDF document text
    • https://zefonapurakago.yftejum.com/76923333745142923700956690?mumosodugagofukeguxusexiketanebakuwajutoreganerozizem=tixusopigozipibujinukodulopisufufokovelopemozakenabobotigadidivojifakeduwekujugakuzamojubusijepefupojojifiwunusojofudixemuwimagubibijoduwewudakudovuduroruposiloxapizoviravidutamugimamaPDF link annotation
    • https://zefonapurakago.yftejum.com/76923333745142923700956690?mumosodugagofukeguxusexiketanebakuwajutoreganerozizem=tixusopigozipibujinukodulopisufufokovelopemozakenabobotigadidivojifakeduwekujugakuzamojubusijepefupojojifiwunusojofudixemuwimagubibijoduwewudakudovuduroruposiloxapizoviravidutamugimamasimevexifonoladupafizumive&keyword=clear+and+present+danger+book+free+download&molipovotoxikejukodipurojusuwuvavojuditamiweresijatatinewezibaverumude=fulifefupafipapenegokezolubudirevekagekebubisexexePDF link annotation
    • https://irp.cdn-website.com/64143452/files/uploaded/68400216568.pdfIn PDF document text
    • https://5.imimg.com/data5/SELLER/Doc/2023/10/352954285/NA/OS/ZQ/200262967/46242093981.pdfIn PDF document text
    • https://5.imimg.com/data5/SELLER/Doc/2023/10/352954324/RY/TM/RS/200263049/zabamerogesawew.pdfIn PDF document text
    • https://5.imimg.com/data5/SELLER/Doc/2023/10/352953778/IX/VY/XX/200261570/0fcd3655-c19a-44ee-a284-f6a741281f6e.pdfIn PDF document text
    • https://5.imimg.com/data5/SELLER/Doc/2023/10/352953922/MJ/DW/EV/200263103/sisanijonaxukovilibijar.pdfIn PDF document text
    • https://5.imimg.com/data5/SELLER/Doc/2023/10/352954034/BK/XE/CR/200261471/48aa6451-8325-486c-a8c5-71946fd6b63d.pdfIn PDF document text
    • https://5.imimg.com/data5/SELLER/Doc/2023/10/352954131/VW/EP/QV/200261433/98611375966.pdfIn PDF document text
    • https://5.imimg.com/data5/SELLER/Doc/2023/10/352954231/DS/MW/NV/200261406/4be7c28f-df25-44e7-b62b-cfc329016537.pdfIn PDF document text
    • https://irp.cdn-website.com/f88441b3/files/uploaded/nafup.pdfIn PDF document text
    • https://5.imimg.com/data5/SELLER/Doc/2023/10/352953360/AW/AT/QY/200262945/16713879703.pdfIn PDF document text
    • https://5.imimg.com/data5/SELLER/Doc/2023/10/352953964/QS/LD/PY/200263049/d9940ffd-3c97-471a-9efa-bb0981c74c20.pdfIn PDF document text
    • https://irp-cdn.multiscreensite.com/d6059468/files/uploaded/94136965254.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://dejavu.sourceforge.netIn extracted file (font_00_sfnt_off00047088.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00047088.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00047088.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47088 16408 bytes
SHA-256: 2cfeef6db74b767ca38fd7e74c57f98e97ac3b38e2e9c2e84a35bc7734d3a96d
font_01_sfnt_off00049afd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49AFD 16460 bytes
SHA-256: 6b8b388a2c46a6d478e79f3e63297e9337d0d3af21acf7d52424b3d6506ae2c2