Malicious PDF — malware analysis report

Static analysis result for SHA-256 e74dad48eceb602b…

MALICIOUS

PDF

81.9 KB Created: 2021-09-18 14:53:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: dfc3b44072d9520b6aa59344a44bb5c6 SHA-1: fe4a0c3ecea5dd4e7a437c6ba599962b95d0d4ff SHA-256: e74dad48eceb602b95e497823236d26afd9095ac6389ba8d7d608b912b4e7de4
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ML classifiers and ClamAV as malicious, exhibiting characteristics of a phishing and redirection lure. The document body, though heavily obfuscated, combined with numerous embedded URLs and heuristics like 'SE_PAYMENT_REDIRECT_LURE', strongly suggests an attempt to trick users into changing payment details or visiting malicious sites. The presence of external URIs and link farm patterns further supports a phishing attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9846

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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://pixomot.ru/uplcv?utm_term=sincronizzare+hotmail+su+android PDF link annotation
    • http://studiofapas.it/userfiles/files/87507657067.pdfIn PDF document text
    • http://pnlestari.com/visitbali/image/files/tidawa.pdfIn PDF document text
    • https://www.milestonesmn.org/ckfinder/userfiles/files/66194236496.pdfIn PDF document text
    • http://kahasat.cz/data/file/getinediguvafebepero.pdfIn PDF document text
    • http://hotelbasantresidency.com/uploads/debobax.pdfIn PDF document text
    • http://biosystech.com/pdsFck/file/22831018787.pdfIn PDF document text
    • http://1night2day.com/ckupload/files/kezevosatedulinilebavaxat.pdfIn PDF document text
    • http://xn--90aoj0agf7cq.xn--p1ai/uploads/files/67792472115.pdfIn PDF document text
    • https://andana.us/files/files/59416067830.pdfIn PDF document text
    • http://xn--80adpfaaeictf0c6c7i.xn--p1ai/public/file/93398794202.pdfIn PDF document text
    • https://www.leasing.net.in/ckfinder/userfiles/files/10936629934.pdfIn PDF document text
    • http://fs-select.com/images/blog/file/86325432130.pdfIn PDF document text
    • https://kitapkaplama.com/upload/ckfinder/files/pugogatudesi.pdfIn PDF document text
    • http://3gr-group-com.gbintl.com/ci/userfiles/files/28932399683.pdfIn PDF document text
    • https://khyatiinfotech.biz/ckfinder/userfiles/files/kimofew.pdfIn PDF document text
    • http://adriennemason.com/assets/files/varebugape.pdfIn PDF document text
    • http://matrixuniverzum.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16134954bbcf3d---29911425556.pdfIn PDF document text
    • https://dialogueinpraxis.net/files/docs/goxuwamox.pdfIn PDF document text
    • https://korankertas.com/contents/files/pukixomorezuwitalefojuz.pdfIn PDF document text
    • http://iccjsc.vn/images/uploads/files/soduvinifone.pdfIn PDF document text
    • http://taaltoetsvo.nl/userfiles/file/reropu.pdfIn PDF document text
    • http://mylodge-naoshima.com/images/blog/file/sozevav.pdfIn PDF document text
    • https://kingdomofgodmn.org/userfiles/files/82418144327.pdfIn PDF document text
    • https://www.conkite.com/wp-content/plugins/super-forms/uploads/php/files/736f89f0ce89f80f7c4de0f33055cc34/tuvelimujibax.pdfIn PDF document text
    • https://migger.dk/userimages/file/jixud.pdfIn PDF document text
    • http://s250801404.onlinehome.fr/img/uploaded/file/maxexawizewebit.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 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_off0000d9a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9A1 18220 bytes
SHA-256: 1040c5b7810b68819f8d73c50194e701035181b5ca63993259b929f221e62d66
font_01_sfnt_off00010921.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10921 10872 bytes
SHA-256: 6087dc4ee3676ee2f56514dcc1047c5698b389b29354076e5ce44e6143368c3e
font_02_sfnt_off0001220c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1220C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1