Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddeaca98e778bc26…

MALICIOUS

PDF

159.7 KB Created: 2021-06-21 08:08:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: b142926f4a2205670c7cc7aeecb8d091 SHA-1: 7c965bdc7d014aa215a7af962252a5a735a3e972 SHA-256: ddeaca98e778bc261b7e0f9e0db9ae4d3a2e6f49921559d7932efc2251a2781c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external resources, many of which are hosted on compromised CMS uploads or disposable domains, suggesting a link farm designed to distribute malicious content. The ClamAV detection and ML classifier indicate malicious intent, likely related to phishing or malware delivery, as suggested by the lure of a game mod download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9861

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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
  • 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://smidgel.ru/uplcv?utm_term=temple+run+2+frozen+shadows+mod+apk PDF link annotation
    • http://niszczeniewaw.pl/userfiles/file/81610532131.pdfIn PDF document text
    • https://mariellatriolo.it/public/file/toburubunurik.pdfIn PDF document text
    • https://unitedcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607dc49fcf10c---20565774781.pdfIn PDF document text
    • https://backcountryplayground.com/wp-content/plugins/super-forms/uploads/php/files/322e697ffe1c664d50176c2cf41db166/12379441194.pdfIn PDF document text
    • https://mediabandit.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607aa8b0ac45a---36210731361.pdfIn PDF document text
    • https://robinio.de/wp-content/plugins/super-forms/uploads/php/files/tl6mslh59mnuc9lp2579b9hdj1/6881572706.pdfIn PDF document text
    • https://www.bountyvacation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca86619e3d---68715117059.pdfIn PDF document text
    • http://www.hydro-tg.pro/upload/file/zufuruxosuwizole.pdfIn PDF document text
    • https://duext.com/wp-content/plugins/super-forms/uploads/php/files/103542cfaf489467467a30b7a70f71a5/12051151636.pdfIn PDF document text
    • http://artistalexanderkanevskyroyalshakespeareglobetheatrelondon.com/clientMedia/file/pixalofofojaxes.pdfIn PDF document text
    • http://makaeximworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a5fff9ab095---kubisisotimekawakagugo.pdfIn PDF document text
    • https://harpethvalleypto.org/wp-content/plugins/super-forms/uploads/php/files/079ea2686d94bc9f84050734833018f6/61736449028.pdfIn PDF document text
    • http://ingenermarket.ru/userfiles/24930173048.pdfIn PDF document text
    • http://www.next-conseil.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1609b0f2b06f4f---jazipeku.pdfIn PDF document text
    • https://www.fifatravels.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078ff159ce9b---zonagonujebo.pdfIn PDF document text
    • http://otoozevran.com/resimler/files/41188280757.pdfIn PDF document text
    • https://www.skyline-recruiting.com/wp-content/plugins/super-forms/uploads/php/files/4763bebc728d2ef545dcc356c4519a08/81797593920.pdfIn PDF document text
    • http://www.etoiles-recrutement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bcdf5d79e66---55346402541.pdfIn PDF document text
    • https://polskieplytki.com/wp-content/plugins/super-forms/uploads/php/files/0e0fbcd67001e4bf2b87c546ca343284/36170724053.pdfIn PDF document text

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