Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccee392d7664df89…

MALICIOUS

PDF

85.3 KB Created: 2021-09-15 12:53:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 4496bbfc41e2bbd9a862e89935d996a6 SHA-1: f92973094afdb413c109d09b8506ca351ef462c4 SHA-256: ccee392d7664df89c0fbeda4c8b00dda74d61304f9865f95a92eb0090e3d3d01
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' suggests the document is designed to host numerous links on disposable domains, likely to redirect users to malicious sites. The embedded URL with 'utm_term=download+my+little+pony+hack+apk' indicates a lure for potentially unwanted software or malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 http://tyextractor.com/d/files/mikowelusuxojowiza.pdf In PDF document text
    • http://faradtvandor.hu/picture/userfiles/file/xeruxavazikixizusawa.pdfIn PDF document text
    • http://elskenecologie.nl/files/kovukinurewebekivan.pdfIn PDF document text
    • http://maksimetall.ru/files/zifedamokaxetejumewox.pdfIn PDF document text
    • http://rooptex.com/uploads/34505228096.pdfIn PDF document text
    • https://datxeninhbinh.com/data/dulieu/files/magotenukawefa.pdfIn PDF document text
    • http://saigondome.com/uploads/userfiles/file/pevokifijamafowebojeganil.pdfIn PDF document text
    • http://machin.kr/userData/board/file/fiwepoxawe.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16141be98ab4c3---57731256129.pdfIn PDF document text
    • https://clinicaabrahaoosta.com.br/ckfinder/userfiles/files/xoxux.pdfIn PDF document text
    • https://www.mtiwelding.co.uk/admin/ckfinder/userfiles/files/burulirubewoloremesaso.pdfIn PDF document text
    • http://tythb.com/uploadfile/files/28152513525.pdfIn PDF document text
    • http://www.radio-kum.si/data/files/dagudozu.pdfIn PDF document text
    • http://becro-plast.hr/wp-content/plugins/formcraft/file-upload/server/content/files/16138980fc881a---92905700940.pdfIn PDF document text
    • http://bftt.marketsearching.com/upload/files/61514145313.pdfIn PDF document text
    • http://akkoryazilim.com/userfiles/file/sabidixutenujabo.pdfIn PDF document text
    • http://farashimirooz.com/files/fexibikifetanud.pdfIn PDF document text
    • http://3e3i.com/UserFiles/file///31719592858.pdfIn PDF document text
    • http://sictombbi.fr/ckfinder/userfiles/files/9894313730.pdfIn PDF document text
    • https://coffeetuanvang.com/Images_upload/files/taniserilexejo.pdfIn PDF document text
    • http://studioiulianella.it/userfiles/files/73449183584.pdfIn PDF document text
    • https://www.pelicanfinancialnetwork.com/ckfinder/userfiles/files/jomogigonuwanux.pdfIn PDF document text
    • http://reanda.com/jingkelun/userfiles/files/20210913194222.pdfIn PDF document text
    • https://mmgrowersg.com/ckfinder/userfiles/files/kiwivafomixetulejubipa.pdfIn PDF document text
    • http://sumosushingrill.com/uploads/files/86582041124.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=download+my+little+pony+hack+apkPDF 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_off0000e6d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6D7 18224 bytes
SHA-256: 07a673c7363c0261db6f130404fb5ed8ea021d6338350e484034da50ddb24688
font_01_sfnt_off00011662.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11662 10804 bytes
SHA-256: 47da63595da490e0369c8533693e7615dbda896492ee39a542434e0f62e340b8
font_02_sfnt_off00012f1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F1B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1