Malicious PDF — malware analysis report

Static analysis result for SHA-256 74579e8514a56249…

MALICIOUS

PDF

78.1 KB Created: 2021-03-08 04:46:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 27254fa416fc96ce1f0140331ef814ec SHA-1: 8ec9e78bc969366ffd5c110018ee41b0e154fa31 SHA-256: 74579e8514a56249c78124c020af61280aefbf6e8a1be23849e172c1d5127be5
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, identified as malicious by ClamAV and ML classifiers. The document body, though heavily obfuscated, suggests a lure related to scientific materials, likely intended to trick users into visiting the malicious URL. No scripts were extracted, but the presence of external URIs and the high confidence detection indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://lozipotod.ru/aws?utm_term=difference+between+diamagnetic+and+paramagnetic+materials PDF link annotation
    • https://pevexozu.weebly.com/uploads/1/3/4/8/134857768/sagefa.pdfIn PDF document text
    • http://skidki-day.shop/xafaxodulad7xgo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379846/normal_5fced0164e621.pdfIn PDF document text
    • https://piluzixalevuj.weebly.com/uploads/1/3/5/3/135345731/e1b80a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404124/normal_602390c6de6ab.pdfIn PDF document text
    • https://jetujonupukoj.weebly.com/uploads/1/3/1/1/131163664/kidabu-mabagagogobipuw-pesedibesipiwub-nivamorat.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402262/normal_6013e37d43c54.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494883/normal_5fc6c378e2a42.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391899/normal_5ff9dd4f9465d.pdfIn PDF document text
    • http://bitcoinlearningcentre.online/wutagh8el8.pdfIn PDF document text
    • https://cdn.sqhk.co/tamenotu/CeihPgd/restaurant_story_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/goganededem/Ghbjaia/penguin_isle_max_level_fisherman.pdfIn PDF document text
    • https://gidaxejopof.weebly.com/uploads/1/3/4/3/134305554/pejodenuxifop.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464707/normal_6042073a5b126.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387819/normal_5fd7ce99170a2.pdfIn PDF document text
    • http://gufutaca5.xyz/criminalistics_an_introduction_to_forensic_science_13th_editionywis0.pdfIn PDF document text
    • https://cdn.sqhk.co/bisidilit/MJhgm94/cute_animals_hd_mobile_wallpaper.pdfIn PDF document text
    • https://verulezame.weebly.com/uploads/1/3/0/8/130814285/9853490.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/ruzaganog/asrock_z97_pro4_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/fumiposamisur/integrated_reporting_information_system.pdfIn PDF document text
    • https://s3.amazonaws.com/bupaxomu/kusafovipopukevuruwek.pdfIn PDF document text
    • https://s3.amazonaws.com/wujapu/calorimetry_chemistry.pdfIn PDF document text
    • https://s3.amazonaws.com/tobobowu/nawituzajudipofis.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_off0000f3f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3F2 5708 bytes
SHA-256: 667370c995bef11d0b7575c7b70f114502e5558a0fd53ff4fdb35f8e686e02a5
font_01_sfnt_off0001075b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1075B 10296 bytes
SHA-256: cef3743b21d9314e2217177998b0462177540a23ce423fdcc11876b236c530fb

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