Malicious PDF — malware analysis report

Static analysis result for SHA-256 932c69fee4b555b0…

MALICIOUS

PDF

84.7 KB Created: 2021-09-20 09:36:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: a2eb02ff476e0d234848ed089cac2263 SHA-1: 014070a7e539349c302318c86e41adb0625ecdba SHA-256: 932c69fee4b555b0883bb892b647189068882cd10f43db831947ca82b1acf284
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many pointing to disposable domains, indicating a likely phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded links are characteristic of a phishing lure, potentially leading to further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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 https://oniceh.ru/uplcv?utm_term=boruto+x+naruto+apk PDF link annotation
    • https://apra.pl/files/file/kegenad.pdfIn PDF document text
    • https://areicon.com/images/file/4642700358.pdfIn PDF document text
    • https://nieruchomosciprzetargi.pl/files/file/kufiwukexazereguwajadi.pdfIn PDF document text
    • http://maristaslardero.es/userfiles/file/74313377632.pdfIn PDF document text
    • http://toonesk.com/upload/nadezobus.pdfIn PDF document text
    • http://veterinariacasettamattei.it/userfiles/files/74227302825.pdfIn PDF document text
    • https://rocksoliddesigns.biz/userfiles/file/rizenodumobawavaduzadeta.pdfIn PDF document text
    • http://palletgoanloi.com/img-dn/files/21873885555.pdfIn PDF document text
    • http://xn----7sbev0bhje.xn--p1ai/images/news/file/dufazewa.pdfIn PDF document text
    • http://dezis.ru/uploads/files/78320993703.pdfIn PDF document text
    • http://xn--80adic7alej3d.xn--p1ai/userfiles/file/manifenew.pdfIn PDF document text
    • http://educasters.co/ckfinder/userfiles/files/3771803453.pdfIn PDF document text
    • http://www.lebedosapartotel.com/data/yukle/files/45584000983.pdfIn PDF document text
    • http://p-itos.net/admin/userfile/image/file/japajuwezoxivan.pdfIn PDF document text
    • https://landtop.com/filespath/files/20210909115453.pdfIn PDF document text
    • http://gibisch.org/files/files/35949297339.pdfIn PDF document text
    • http://sangjeom.com/userfiles/file///63122816128.pdfIn PDF document text
    • http://elcivan.com/admin/UserFiles/file/13496704504.pdfIn PDF document text
    • https://divetechmarine.com/contents/files/nesejirajixo.pdfIn PDF document text
    • http://gulfcoastlist.com/userfiles/file/28300822735.pdfIn PDF document text
    • http://crocepadrekolbe.it/userfiles/files/55065639172.pdfIn PDF document text
    • http://uniradioweb.info/userfiles/file/korusuzexewoxa.pdfIn PDF document text
    • http://for-rent-aalst.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613a810a20f37---7258696226.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_off0000e3a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3A5 10156 bytes
SHA-256: f9a5c2bf8eaa64ef47ace856b1f6ac19f0159921fda3d709bbeb948b287e4c49
font_01_sfnt_off0000fa89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA89 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001129b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1129B 19212 bytes
SHA-256: dcf6fc3ae0d8d0951040f660e3109a78aeea004c33cc673eba53a358285a8b89

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