Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7f8ddc6a4521cf8…

MALICIOUS

PDF

65.2 KB Created: 2021-03-08 08:34:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: b0e5b525a5df2ff7b41541825ee21e04 SHA-1: d38923ffd59ddf6549e6f61494a0cc12c1e2e0dd SHA-256: e7f8ddc6a4521cf8ec0d9a5d58beeb7b6a4a6fdb8ad202c05addcab225d062e6
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, many hosted on disposable domains, indicating a link farm designed to distribute malicious content or phish users. The ClamAV detection and ML classifier strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6648

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation 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.
  • 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://xajibur.ru/award?keyword=how+to+train+your+dragon+homecoming+netflix+release+date PDF link annotation
    • http://kernig.online/de_centimetros_a_milimetrospwtbk.pdfIn PDF document text
    • https://miravavomi.weebly.com/uploads/1/3/1/4/131410597/woruvijafusoduriwute.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387586/normal_5ff06e37c5455.pdfIn PDF document text
    • https://wugowimuvup.weebly.com/uploads/1/3/4/7/134762233/jupexisivigojaxaluni.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501233/normal_602f272fc305a.pdfIn PDF document text
    • http://s-tochka.ru/oracin_al_espritu_santo_juan_pablo_segundofo4rw.pdfIn PDF document text
    • https://kizofirelurok.weebly.com/uploads/1/3/1/6/131606598/zazoxobawabaximuwes.pdfIn PDF document text
    • http://lnstagram-verifedbadge.com/174855011344qwtx.pdfIn PDF document text
    • http://arbitestpark.xyz/apgvb_mobile_apppmjib.pdfIn PDF document text
    • https://wufodiwefoveve.weebly.com/uploads/1/3/4/8/134891768/gevuguw.pdfIn PDF document text
    • http://acgmgroup.ru/cronica_de_una_muerte_anunciada_capitulo_1_preguntas_de_comprensionclf4x.pdfIn PDF document text
    • http://palikexifumalam.mywebcommunity.org/ariens_sno_tek_24_price.pdfIn PDF document text
    • https://xopaluwejur.weebly.com/uploads/1/3/1/8/131857284/konunazigufakiruk.pdfIn PDF document text
    • http://ruwosiju.getenjoyment.net/zuperolozu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/21fbdf08-1fbf-4a6d-ba64-95cfbefb7524/project_management_professional_pmp_certification_cost.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/269a4efd-1514-444c-ac11-7a0d1d7c18ab/roku_stick_set_up_instructions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6f1f11c-1a97-4767-b52e-b18c5a1351f6/war_and_peace_full_movie_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/725d5fc8-10ba-4a4c-ab2b-888d437ad37e/what_is_linear_programming_used_for.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/74983ed3-d09b-49dd-8962-1f702f501719/dozafizuvipomifonelafelir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/137ed234-8466-4f48-8310-4b80b8e9cf59/what_does_neuropsych_testing_diagnose.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/99fc0770-6d36-4531-8c5f-7e09ed0ea703/how_to_convert_text_to_on_iphone.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ce13363-c869-4213-a262-fa30f06ed575/if_you_cry_too_much_what_happens.pdfIn PDF document text

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