Malicious PDF / .VIR — malware analysis report

Static analysis result for SHA-256 be7f37e9e857b5e4…

MALICIOUS

PDF / .VIR

78.2 KB Created: 2024-03-30 20:23:01 Authoring application: Serif PagePlus First seen: 2024-05-27
MD5: 0e85cffc11ff6a8b9bad69103aedead1 SHA-1: 6f7036b8e6c0600f40ccd6d82e34f1f66127fe59 SHA-256: be7f37e9e857b5e408297b06aaf983136fe3c920b488f91b216d64a8e5acc4c3
216 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6084

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://davici.ru/bitrix/redirect.php?goto=https://www.ubalt.edu/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://gopiwufiwa.manabi-subete.com/f/93976 In PDF document text
    • http://www.internetsante.com/enburgos/click.php?url=https://lawnetportal.law.columbia.edu/html/js/editor/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://gewegase.theplazahotelbalanga.com/f/33865In PDF document text
    • https://pie-recruitment.prod.kulea.marketing/api/redirect.me?track=000000&url=https://jagwire.tamusa.edu/html/js/editor/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://kopekuz.sentineltr.com/f/78735415In PDF document text
    • https://zenusebejev.xenina.co.za/11630230173207041604993528?zipetavonifiwewexexafosisizogasagopuroluravutetadipuxiwobiwulozagogidufaxeluxodovo=durotexopobalanedapesazimaduzibigirumepuxuxusulonogenefoxitofufunijesufimaxusumisegizuxobilowawigatimotekorarasuwatajunivevutirijutemuwaxibakojabaderamovaniwotirewakapamemudeloponaxakozanipoladokutobana&keyword=mass+effect+legendary+edition+face+codes+list&nalitozeludimuzorifogufezovokigejusozumuzefesezu=mexedigurotesepizunavenadujariravifufepakalaregudukupebutaribobovoxesumabadigapuxiriwuzesaromematerimepetIn PDF document text
    • https://zenusebejev.xenina.co.za/11630230173207041604993528?zipetavonifiwewexexafosisizogasagopuroluravutetadipuxiwobiwulozagogidufaxeluxodovo=durotexopobalanedapesazimaduzibigirumepuxuxusulonogenefoxitofufunijesufimaxusumisegizuxobilowawigatimotekorarasuwatajunivevutirijutemuwaxibakojabaderamovaniwPDF link annotation
    • https://zenusebejev.xenina.co.za/11630230173207041604993528?zipetavonifiwewexexafosisizogasagopuroluravutetadipuxiwobiwulozagogidufaxeluxodovo=durotexopobalanedapesazimaduzibigirumepuxuxusulonogenefoxitofufunijesufimaxusumisegizuxobilowawigatimotekorarasuwatajunivevutirijutemuwaxibakojabaderamovaniwotirewakapamemudeloponaxakozanipoladokutobana&keyword=mass+effect+legendary+edition+face+codes+list&nalitozeludimuzorifogufezovokigejusozumuzefesezu=mexedigurotesepizunavenadujariravifufepakalaregudukPDF 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_off0000e5e0.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000e5e0.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e5e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5E0 11524 bytes
SHA-256: 2c01b6b7580c0bc3da1cc162830bf6abe0d55cbaf752a958d9ed3c9f8ab4368b
font_01_sfnt_off00010103.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10103 16248 bytes
SHA-256: cbb4274af2f272eaabc93fd5b05c541433a8055e696a22b3056016ae3d6554e7