Malicious PDF / .VIR — malware analysis report

Static analysis result for SHA-256 0af54fb2c6cb86cb…

MALICIOUS

PDF / .VIR

449.8 KB Created: 2023-11-08 09:34:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2024-10-23
MD5: 0bf6e91b71baecfbb69aabadb7b7ab15 SHA-1: acf375474f14476cddcfe7849aa0049db4b2182b SHA-256: 0af54fb2c6cb86cb820122e4c2a91c87e7117972a3efc090c105deaa5cee8f4c
216 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8763

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://bufoxuka.lancsports.com/veseramufezibesiwuvagosuf.pdf In PDF document text
    • https://labimabazo.davidsaffir.com/fawaxadasalibonebifasam.pdfIn PDF document text
    • https://fipijusek.akgrafik.com/befuvakutivujeb.pdfIn PDF document text
    • https://mugaferoru.biaremodelor.org/1048252312.pdfIn PDF document text
    • https://jisifogupuz.yubit.co.za/26386020457826792641100327?powofemepabagitokakelowepelezopomezupigixeduporonuwanituvipib=jizetugulolizidumumazazokukadenudapodavuketawilojujavoxidupisebirosatililusesusefofuwozewijajuxovakerusemamusovovavetigewixetudedekinikexofuxerozuwetutamexixovinodakedirarilufudorigejisugesozeniwifimiwiwonelil&keyword=chiffre+au+carr%C3%A9&jijejuraxejukezeverubepesemuwovafuzatuduzotatevijupofasigaxeterisapokenuxa=moziropetipixekifuxozetepaziroxakipezedosewedabazisoribapogasivevilagelujotixubolodazezekakomurogorideziladapitimopunelusikifewubuvuzivujekusotIn PDF document text
    • https://rilumexe.milliwaysconsulting.net/ginunoso.pdfIn PDF document text
    • https://jisifogupuz.yubit.co.za/26386020457826792641100327?powofemepabagitokakelowepelezopomezupigixeduporonuwanituvipib=jizetugulolizidumumazazokukadenudapodavuketawilojujavoxidupisebirosatililusesusefofuwozewijajuxovakerusemamusovovavetigewixetudedekinikexofuxerozuwetutamexixovinodakedirarilufudorPDF link annotation
    • https://jisifogupuz.yubit.co.za/26386020457826792641100327?powofemepabagitokakelowepelezopomezupigixeduporonuwanituvipib=jizetugulolizidumumazazokukadenudapodavuketawilojujavoxidupisebirosatililusesusefofuwozewijajuxovakerusemamusovovavetigewixetudedekinikexofuxerozuwetutamexixovinodakedirarilufudorigejisugesozeniwifimiwiwonelil&keyword=chiffre+au+carr%C3%A9&jijejuraxejukezeverubepesemuwovafuzatuduzotatevijupofasigaxeterisapokenuxa=moziropetipixekifuxozetepaziroxakipezedosewedabazisoribapogasivePDF link annotation
    • https://uploads-ssl.webflow.com/64f1a3eed7acc99e5ed6aca5/6548355aaddfee239d5ad489_nowubaruwawukalafakaga.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/fa4295b9-8c98-4187-bbf8-91c9d7ce5f9e/downloads/1288345556.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/2fafa767-6d1f-4685-8e64-b3c0bb4471eb/downloads/graveyard_keeper_dark_injection_purpose.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/ac37b1bf-99c9-40af-be4e-2704a83e665c/downloads/77957161859.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/75cde431-b425-4447-a835-04ab019ab5e4/downloads/200767237.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_off0006ad50.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0006ad50.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0006ad50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AD50 20888 bytes
SHA-256: ceffe77a7069a5b7cb39d86a13704fb67cff3c83591a2f760be8623b24b80f14
font_01_sfnt_off0006e209.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E209 10184 bytes
SHA-256: caf5a25c3c193af62d0736e6d8ff9fbc45ccf3599ce7632167d64272636ca92b