Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e0eee9bebf70952…

MALICIOUS

PDF

96.8 KB Created: 2021-03-20 00:08:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 4054f775b77e9837b890e8365d786dd6 SHA-1: 5ca21175ca59d2a022f5b37031ffa85a75b4e39f SHA-256: 2e0eee9bebf70952fdb427bfa934d0955646a298da9682bd3743cc58e13a6f6b
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous external links, indicating it functions as a link farm. The primary malicious URL identified is https://mezovuduw.ru/award, which is likely used to distribute further payloads or redirect users to phishing sites. The ML classifier and ClamAV detection strongly suggest malicious intent, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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
  • 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://mezovuduw.ru/award?keyword=beauty+tips+for+face+in+tamil+language+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4426556/normal_6032c13661ac1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446382/normal_600d166152e68.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412767/normal_5fce16f3c999f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449422/normal_6041c4b3cd385.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455380/normal_5fcb9e1f8255a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464709/normal_5fd0aa1c3966e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450354/normal_60445b685cebe.pdfIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://6ec3981f-6443-463b-a164-91fc69f101d9.filesusr.com/ugd/7603ae_9b2a9429542646f8be8635bdec8a560f.pdf?index=trueIn PDF document text
    • http://zasugizej.epizy.com/porque_no_me_crecen_las_uas_delas_manos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85c0329e-bcca-4af4-9ecf-a0f74e6e89cd/what_are_the_first_5_books_of_the_bible_called.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/764a208c-b125-4ce4-a1ac-adcd2d18788f/7522127950.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f2d23c7-41fc-4181-8708-4d8ac92a6528/proving_trigonometric_identities_worksheet_with_answers_doc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f33959a-ffdb-43b7-af2f-7c776e20add8/canon_imageclass_d320_printer_data_error.pdfIn PDF document text
    • http://bakajejupuxa.epizy.com/they_say_i_say_gerald_graff_and_cathy_birkenstein.pdfIn PDF document text
    • http://vuzinibijabu.rf.gd/varozulolajamotirukusakos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19bdbfa4-77ac-4e8c-9b0b-563ba3cbdd05/devutikipadutefuxum.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de20fc24-eafb-4b71-9004-95705314a257/the_standards_real_book.pdfIn PDF document text
    • http://takugiwem.rf.gd/xoxewokewakakijenegoxoba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/58ec7375-50e8-434b-bbf8-6e5a24200e00/blues_guitar_unleashed_review.pdfIn PDF document text
    • https://065b66ee-25d8-4381-b309-094abc4d823c.filesusr.com/ugd/2703e6_9147e4268e9d4ab7a04cd650b35ba41e.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/75c1b0c3-4232-4071-a89d-4047b7df543d/79922522906.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00011cb4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x11CB4 24960 bytes
SHA-256: a47cedfaa4ab978b97e37392b08148f8e9eed59e73cec3776208943dc0697cf4
font_00_sfnt_off0001099e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1099E 5624 bytes
SHA-256: 6d752db32e0e00122f885bbf004573bb2e72acfbe626f1d8be1120347d121d4a
font_02_sfnt_off00014f87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14F87 10532 bytes
SHA-256: 435e5b66e3a1f9dc6a59ecc5ec1d4e958fab05d7b3785bb818031ce4d6dfb78b

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