Malicious PDF / .VIR — malware analysis report

Static analysis result for SHA-256 cb7f1ba24b6cc64f…

MALICIOUS

PDF / .VIR

394.8 KB Created: 2023-10-29 08:58:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2024-10-15
MD5: e1d4ae2e5947dc874a7f3ff285c8b4ce SHA-1: 5ae340d976383ec0d42f7be670f12519dca64516 SHA-256: cb7f1ba24b6cc64fdcf0ed3d3cab14d59340e182aba6243b17dbb42bff06144d
216 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9742

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://xoxevamenuzot.yubit.co.za/55948881174928306922838908?kusozowoteviminokorutomewosozizojovedejevamisetefosususumopiluzukafujebarefogewidabunodekaxewejed=vatujixawululepisojiwogimaxazaxebejumevakinuzutinofebasolapeduvorekapekilunirogeburapedupaxunukibavojadevoxiwalitimuveloliririguwuxozefolubofenivipepapegizirazakebejukelogopegedoxeruvoluzozonosolanusof&utm_term=2005+pt+cruiser+blue+book+value&tabudifiromalaxixaxawizusilutinowodevipokepezaxugazipadolevunojujaximetisududabumujukunegexokepa=lojipapiwoluxukolikugisutibalikuwesiwavevufubanibuxeraxabebuvebexixuvidojafivonubobafesitunowenivexavuvedimedexujusiligovodobovesiparojalubaredopag In PDF document text
    • https://xoxevamenuzot.yubit.co.za/55948881174928306922838908?kusozowoteviminokorutomewosozizojovedejevamisetefosususumopiluzukafujebarefogewidabunodekaxewejed=vatujixawululepisojiwogimaxazaxebejumevakinuzutinofebasolapeduvorekapekilunirogeburapedupaxunukibavojadevoxiwalitimuveloliririguwuxozefolubofPDF link annotation
    • https://xoxevamenuzot.yubit.co.za/55948881174928306922838908?kusozowoteviminokorutomewosozizojovedejevamisetefosususumopiluzukafujebarefogewidabunodekaxewejed=vatujixawululepisojiwogimaxazaxebejumevakinuzutinofebasolapeduvorekapekilunirogeburapedupaxunukibavojadevoxiwalitimuveloliririguwuxozefolubofenivipepapegizirazakebejukelogopegedoxeruvoluzozonosolanusof&utm_term=2005+pt+cruiser+blue+book+value&tabudifiromalaxixaxawizusilutinowodevipokepezaxugazipadolevunojujaximetisududabumujukunegexokepa=lPDF link annotation
    • https://img1.wsimg.com/blobby/go/1e00621d-7ac8-4aab-8a1a-2467c171cb22/downloads/9317871224.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/738cd3ca-10f0-4f1e-865e-c0932904fbb2/downloads/bavosogeve.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/738cd3ca-10f0-4f1e-865e-c0932904fbb2/downloads/50451534623.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/02278da2-727a-4de5-b452-e60edf5ccd32/downloads/why_is_my_printer_printing_lines_canon.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/dd367d58-f6ed-4d1d-b52f-533ed39baef9/downloads/36732871443.pdfIn PDF document text
    • https://uploads-ssl.webflow.com/64ee1aaefbdf140b3bdb3c35/6537b0c0796f7118dd875a0e_wibujukepoxud.pdfIn PDF document text
    • https://uploads-ssl.webflow.com/64f84f11e20068093f42aedd/6537aece51bca861890904c9_palagosumemenowavikufinup.pdfIn PDF document text
    • https://uploads-ssl.webflow.com/64edeae32cfc8f8136fcbd05/6537b456254412602f6b10f9_jaziw.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/8bb39424-0d01-46b8-9620-e7e3f814300e/downloads/87138628341.pdfIn PDF document text
    • https://uploads-ssl.webflow.com/64f84925f49f58f016018ad0/6537b49693e02ec27670a7b8_xamejibutopoririwiriz.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_off0005d9ee.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0005d9ee.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005d9ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D9EE 16576 bytes
SHA-256: c80dd1bb3cef22816041afca37b75971504156b8d582356f35d0242a64947108
font_01_sfnt_off000604fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x604FA 10940 bytes
SHA-256: 0294d72d60bb232e0c571d24e33bcedec28510ea63e0e556b55222ff3fcf59c8