Malicious PDF — malware analysis report

Static analysis result for SHA-256 e017ac0c12b4a9cb…

MALICIOUS

PDF

70.1 KB Created: 2021-09-22 11:13:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: f0c351c92603fc4a58898f72cc85e76a SHA-1: 32a8a239a2c3cea4afbaaf26ea4321def93d58e7 SHA-256: e017ac0c12b4a9cbbc0bd864d7d514ee516cb38b5a864da9b85233af81d34039
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many pointing to disposable domains, and is identified as a link farm. While no scripts were explicitly extracted, the PDF structure and heuristic firings suggest it is designed to redirect users to potentially harmful external sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

Heuristics 5

  • 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.
  • 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://tedesco.pl/userfiles/file/42251197615.pdf
    • http://nofatrans-int.com/userfiles/file/pavipixabozubokoke.pdf
    • http://muaah.ca/userfiles/files/fagufazonibabomutakaperoj.pdf
    • https://o-dance.com/upload/files/parijenag.pdf
    • http://karinameal.ru/imgdish/files/84017457831.pdf
    • http://blessingsngo.in/userfiles/files/68259696725.pdf
    • http://crimesla.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/98274661841.pdf
    • https://www.edutechusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/16142169de6714---94033829009.pdf
    • http://vishwkarmaenterprises.com/webroot/img/userfiles/files/61970451876.pdf
    • https://ciela13.leaddeehub.com/userfiles/files/binananokifofatusulub.pdf
    • http://ambvetsanprospero.eu/userfiles/files/61073981001.pdf
    • https://weboonline.com/ckfinder/userfiles/files/dumiferaf.pdf
    • https://marupyara.com/fotos/userfiles/file/bumapilup.pdf
    • http://lagunarent.lt/ckfinder/userfiles/files/vexojizobozabib.pdf
    • http://condominiobrisasdelnorte.com/userfiles/file/81336457190.pdf
    • https://horizontire.com/userfiles/file/tapadunuxatikisika.pdf
    • http://houtackers.nl/userfiles/file/dazatizemur.pdf
    • http://fosterfreezesantarosa.com/uploads/files/motuju.pdf
    • https://dogathermalhotel.com/resimler/files/37489134166.pdf
    • https://pinpointfeedtech.com/ckfinder/userfiles/files/satipogixasidenez.pdf
    • http://fujieshubao.com/zk/UploadFile/file/2021091907071173499.pdf
    • http://h-st.nl/bestanden/files/56011178709.pdf
    • https://yifff.se/userfiles/file/butodabulufodowaro.pdf
    • https://kakvkusno26.ru/wp-content/plugins/super-forms/uploads/php/files/538e65ed64470b55ef738842847a2a0a/3561664781.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=download+game+basara+3+for+android
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b34c.bin
a101ea4fed83476de263dd3dd588656fdb11b528e44e76dbebbfe7d60a5fcfa7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB34C 15176 bytes
font_01_sfnt_off0000d99d.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD99D 16792 bytes
font_02_sfnt_off0000f1b4.bin
c09b4eb27e929cf4b9050f274bb204a160e0389d61a48ae853af01a0b5bae68f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF1B4 11000 bytes

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