Malicious PDF — malware analysis report

Static analysis result for SHA-256 41eca19071b7f624…

MALICIOUS

PDF

80.1 KB Created: 2021-03-18 23:31:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 5c96c50e010bacd4d4c65d68b710eeb8 SHA-1: 45f45e282296394c7cce215ccd72ca75f0a9225a SHA-256: 41eca19071b7f62418cdfaef1ce0936e451733fe7f020e02728240565f84a23c
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a suspicious domain, likely intended to trick the user into visiting a phishing or malware distribution site. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://gimoguvi.ru/award?keyword=speak+english+podcast+georgiana+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4420939/normal_5fdaa9b0cd72e.pdfIn PDF document text
    • https://cdn.sqhk.co/zewezerezi/Dajbkgg/toronto_cycling_rules.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369653/normal_600cddca472fd.pdfIn PDF document text
    • https://cdn.sqhk.co/wixexozesila/VgjT6Yq/digital_marketing_basic_concepts.pdfIn PDF document text
    • http://differencecheats.net/jirabadanaroru2jda4.pdfIn PDF document text
    • https://cdn.sqhk.co/menigopas/jiBNuDE/28266681984.pdfIn PDF document text
    • https://cdn.sqhk.co/luwesefizi/jdOgdtD/twisted_tea_bag_calories.pdfIn PDF document text
    • http://gnoogle.site/asmaul_husna_beserta_artinya_docmq6tk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449424/normal_602b77b31070d.pdfIn PDF document text
    • https://cdn.sqhk.co/tedefoso/zheKZha/32342802137.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413564/normal_5fe467b8e06ff.pdfIn PDF document text
    • https://cdn.sqhk.co/nadetajagupe/PLgcjcq/84196440311.pdfIn PDF document text
    • https://cdn.sqhk.co/lupobikud/ojasjhe/domakofuro.pdfIn PDF document text
    • https://cdn.sqhk.co/bitizulokiva/hicFZja/57424675421.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/fcec9b70-9f3f-4e97-b20a-e666631e3812/40560296108.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3cac6793-a547-4212-9aed-db95d739b426/7071714667.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71b93c26-3b81-42ad-8393-bb2d17f5a1a7/the_hunger_games_catching_fire_online_read.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9bf2f426-3fc8-4912-8ee4-612aae2fb6de/what_is_holy_anointing_oil_made_of.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea332efe-ec88-4fd7-bc6d-2d00eb8d9ece/jack_reacher_series_on_netflix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c13fce85-8cb1-4f69-8aee-a5aa0a782e23/burger_king_coupons_2021.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fb02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB02 5584 bytes
SHA-256: 2a969d9b2ee546e015b5e2dcec414b57128699bd3b63306c57e7433674a225f4
font_01_sfnt_off00010dff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DFF 10836 bytes
SHA-256: a3fc1bdec930f51a12212182ea93144c6e7068229f30e45303de7d25eb3c78ac

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