Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ed122f03f724337…

MALICIOUS

PDF

83.3 KB Created: 2021-09-11 19:20:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: e354e177b9baef9bcdcef7de1336639a SHA-1: aa0c73d0a74c8da899a4fa09922d0bfff1982759 SHA-256: 0ed122f03f724337c5bbf2eee259d3008941e6b59ab4a1932ea8e105476288c0
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is identified as malicious by ML classifiers and ClamAV, with heuristics indicating embedded JavaScript and a link farm structure. The PDF contains numerous external URIs, suggesting an attempt to redirect users to potentially malicious websites for phishing or further payload delivery. The presence of embedded JavaScript further supports the likelihood of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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 http://fortwashington.abwingsmd.com/uploads/files/mebimudizizulabimolenenob.pdf In PDF document text
    • https://h1t-url12shio-turbo.com/contents/files/31761122839.pdfIn PDF document text
    • http://bioaec.com/userfiles/files/27455465499.pdfIn PDF document text
    • http://basse-normandie.annuaire-regional.com/ckfinder/userfiles/files/52572045548.pdfIn PDF document text
    • http://fernandopelosini.it/userfiles/files/20252918134.pdfIn PDF document text
    • https://sunarchegypt.com/userfiles/file/pewugup.pdfIn PDF document text
    • https://jungleflightchiangmai.jungle-flight.com/Uploads/files/womubopexejud.pdfIn PDF document text
    • http://winecellarkeeper.com/ckfinder/userfiles/files/zemorejiferobiwufa.pdfIn PDF document text
    • https://ozora.schaffsen.com/contents/file/bozunoselowozuraruvapun.pdfIn PDF document text
    • https://andana.us/files/files/81439401781.pdfIn PDF document text
    • https://towa-aaa.jp/userfiles/file/taxefixo.pdfIn PDF document text
    • https://birudongker.com/contents/files/tameletarovawoz.pdfIn PDF document text
    • https://parlagame.com/calisma2/files/uploads/tivalirukilup.pdfIn PDF document text
    • https://perfecthospitals.org/ckfinder/userfiles/files/93829653749.pdfIn PDF document text
    • http://kingsauto-bar.com/js/upload/files/12468701500.pdfIn PDF document text
    • http://chongthamphucthang.com/images/news/files/zodimebubema.pdfIn PDF document text
    • http://masan315.net/board/imagefile/file/97261088680.pdfIn PDF document text
    • https://pvcmikser.com/upload/files/15309853644.pdfIn PDF document text
    • http://xn--oy2b19v1mb1yi.com/userfiles/file/72544343483.pdfIn PDF document text
    • https://sibiucuratenie.ro/fckeditor/userfiles/file/dakuzoladebu.pdfIn PDF document text
    • http://khamtribacninh.com/images/files/remaduvejatu.pdfIn PDF document text
    • http://ytbozhuo.com/upload/file/10085857983.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=best+launcher+for+redmiPDF 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 PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dfce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFCE 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f7e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7E0 18356 bytes
SHA-256: 71535e8f128539478d2931bcf9cd57d6345b209ce537a3b909c816602b277307
font_02_sfnt_off00012721.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12721 10896 bytes
SHA-256: ad4bf4aebea89b0ca09fe1e6a0af345c8bfa5805558c365db4894163e6d72a32

Open this report in the interactive analyzer, or submit your own file for analysis.