Malicious PDF / .VIR — malware analysis report

Static analysis result for SHA-256 a35d44f3dd3fcd4f…

MALICIOUS

PDF / .VIR

74.5 KB Created: 2023-12-01 22:13:27 Authoring application: SWFTools First seen: 2024-12-09
MD5: fa420ccb927bbe25700adb091ae0db94 SHA-1: f0fc2bb08b2c6c08aa7b68fee0587b0e10816955 SHA-256: a35d44f3dd3fcd4f22dd7854311056cee10a4292bd5f4ed36a9b0faf0a9a549f
176 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8654

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
  • 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.
  • 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://safety-in-the-lab-worksheet-answers.jedermanns-donautal.de/vixoteduvite.pdf In PDF document text
    • https://adservice.google.com.gh/ddm/clk/466651624;272226156;i;;%3F//img1.wsimg.com/blobby/go/442601e2-20ed-4ddb-a903-09e7deacd061/downloads/pdf_converter_hack_apk.pdfIn PDF document text
    • https://adservice.google.com.cu/ddm/clk/408405163;208572896;n;;%3F//img1.wsimg.com/blobby/go/402713db-2744-489f-9f03-e39e03753df0/downloads/rubamugixudar.pdfIn PDF document text
    • https://garezikar.yenene.co.za/497699484055139398?ruvalasetowejexifedodav=bozuxewetizizanugudiwikopajugeroginugurojafozusirafenolepaniluvenitemokumosirigovoxewenotapuzesufevojijetawaropevilikosixitekonevoguxeriwazibugadizifedenopesobekusewagifaxatezolaxujulelupoxefuzejutemigotiv&utm_kwd=static+electricity+worksheet+by+science+master&sixubonikamesugulodikopinuguxokolol=kipuvunifafisuwekezapisifafuwegawufixelarugidasutusojubakamewekatefedodesudinigeborunodemanunakaduneziwegugaxivanesoxodunuwopewapubuzidewurixikewepotoIn PDF document text
    • https://garezikar.yenene.co.za/497699484055139398?ruvalasetowejexifedodav=bozuxewetizizanugudiwikopajugeroginugurojafozusirafenolepaniluvenitemokumosirigovoxewenotapuzesufevojijetawaropevilikosixitekonevoguxeriwazibugadizifedenopesobekusewagifaxatezolaxujulelupoxefuzejutemigotiv&utm_kwd=static+electPDF link annotation
    • https://garezikar.yenene.co.za/497699484055139398?ruvalasetowejexifedodav=bozuxewetizizanugudiwikopajugeroginugurojafozusirafenolepaniluvenitemokumosirigovoxewenotapuzesufevojijetawaropevilikosixitekonevoguxeriwazibugadizifedenopesobekusewagifaxatezolaxujulelupoxefuzejutemigotiv&utm_kwd=static+electricity+worksheet+by+science+master&sixubonikamesugulodikopinuguxokolol=kipuvunifafisuwekezapisifafuwegawufixelarugidasutusojubakamewekatefedodesudinigeborunodemanunakaduneziwegugaxivanesoxodunuwopewapPDF link annotation
    • https://img1.wsimg.com/blobby/go/43c8046c-ec5b-47ae-bd8f-39ed9c70f0cd/downloads/vavafu.pdfIn PDF document text
    • https://adservice.google.de/ddm/clk/445204615;249060672;c;;%3F//img1.wsimg.com/blobby/go/442601e2-20ed-4ddb-a903-09e7deacd061/downloads/73316636716.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_off0000daa2.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000daa2.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000daa2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAA2 15020 bytes
SHA-256: 4b3c832f0345b68835b0aa2686188a474cb0d89f4ed4ec3e2e59c6aa84f77cf7
font_01_sfnt_off000100ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100BA 12064 bytes
SHA-256: d51c6c36e150b3f140662ab9b187f4a6ac069889747c1e418745666f5eb26ed3