Malicious PDF — malware analysis report

Static analysis result for SHA-256 45f749f0db82cf78…

MALICIOUS

PDF

80.8 KB Created: 2021-03-30 16:01:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: fb5e414316e3f8caad5cf0b4bb49504d SHA-1: 62d502d22a5f7e4db3bd7294feed754f9fdd4b3c SHA-256: 45f749f0db82cf786496d40de6c063506852bf088ba316d2f0719eda306453cd
154 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a phishing attempt. It contains an embedded URL that redirects to a known malicious domain, likely intended to trick the user into downloading further malware or submitting credentials. The document body, though heavily obfuscated, suggests a lure related to a 'safety audit report'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://crophysi.ru/award?keyword=safety+audit+report+pdf In PDF document text
    • https://static.s123-cdn-static.com/uploads/4460076/normal_5febb070154a5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421215/normal_60484fe6be123.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476437/normal_5fdb357db3986.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426080/normal_604edbc8035f1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451033/normal_602ade301c481.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448540/normal_6049237580080.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457279/normal_602df6e80ef58.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497075/normal_604d189c3f568.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/b928584e-4835-48f9-96f4-640a29d223a4/21440465757.pdfIn PDF document text
    • https://s3.amazonaws.com/dudigonifu/40192688853.pdfIn PDF document text
    • https://s3.amazonaws.com/ladojenefe/kedetakugusagi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59ce5a79-b795-46a6-a469-d509093f6c9c/stress_scale_for_adults.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/97284e81-6997-4eec-aa9e-2c8592d6330a/the_norton_field_guide_to_writing_with_readings_fifth_edition_ebook.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce01594b-0155-4e06-9410-7748b9a961b1/44726347948.pdfIn PDF document text
    • https://s3.amazonaws.com/fokapikow/71865158482.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f531f739-c414-4684-ae91-d40061eada10/retomag.pdfIn PDF document text
    • https://s3.amazonaws.com/womirofop/adobe_after_effects_free_photo_slideshow_template.pdfIn PDF document text
    • https://s3.amazonaws.com/zerejibixupav/linear_equations_worksheets_grade_8.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f93b244-64b8-4805-9bca-0548893bd78c/detox_diet_plan_dr_oz.pdfIn PDF document text
    • https://s3.amazonaws.com/zidosozawok/nevogow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ee6c895-a479-4da5-8aa4-efa65640fb77/easy_piano_songs_sheet_music_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/69774479-2ff1-41b6-a782-5f93ed4bf2a9/jebukunikobejowitab.pdfIn PDF document text
    • https://s3.amazonaws.com/pasutiz/tc_electronic_hall_of_fame_reverb_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/forupokisip/limomaxazaregeve.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
font_00_sfnt_off0000f3e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3E0 4808 bytes
SHA-256: 65e85be1659dc9a732e8f23112ff1dbd25773e57e797624b55203517cafa7947
font_01_sfnt_off0001044d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1044D 10360 bytes
SHA-256: ed901f30772bdd883658d7f53d38700a3d2e38b2915a23f2ff23088a28984e74
font_02_sfnt_off000127ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127BA 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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