Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e4918c1a49a25c7…

MALICIOUS

PDF

77.5 KB Created: 2021-03-12 20:04:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 99060074d288c3daad2873805d2f485d SHA-1: e688e9d1e7b931fc1da216e290274d948880bdc1 SHA-256: 7e4918c1a49a25c734f8de0038e9392910475ba45b1e7f7e16637b4d37068104
96 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URI points to a URL that appears to be part of a phishing or scam campaign, disguised with keywords related to health and diet. No scripts were extracted, but the PDF structure itself contains external links, suggesting a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://zajinet.ru/award?keyword=metabolic+confusion+meal+plan+pdf
    • https://cdn-cms.f-static.net/uploads/4410694/normal_601a71946f697.pdf
    • https://cdn.sqhk.co/mifaruzamexu/hahgvhd/zumenebazexu.pdf
    • https://cdn-cms.f-static.net/uploads/4486535/normal_6047de8a23b12.pdf
    • http://gojawufeki.getenjoyment.net/18457011456.pdf
    • https://cdn-cms.f-static.net/uploads/4450260/normal_6010b796de652.pdf
    • https://cdn.sqhk.co/jepogedofuz/Piajiig/lost_vikings_2_passwords.pdf
    • https://static.s123-cdn-static.com/uploads/4413564/normal_5ff3ff2372aff.pdf
    • https://cdn.sqhk.co/futevanu/Dhigihf/sejebigew.pdf
    • https://cdn-cms.f-static.net/uploads/4376369/normal_602b03b62899f.pdf
    • http://tikanaw.mypressonline.com/hindu_arabic_numerals_1_1000.pdf
    • http://retapadu.medianewsonline.com/legal_status_fighting_words.pdf
    • http://tututot.mygamesonline.org/tipos_de_aspersoras_agricolas.pdf
    • https://static.s123-cdn-static.com/uploads/4468289/normal_5fe4cc983fed8.pdf
    • https://cdn-cms.f-static.net/uploads/4423188/normal_60139c246c4f3.pdf
    • https://cdn-cms.f-static.net/uploads/4407318/normal_604164b39fd6c.pdf
    • https://static.s123-cdn-static.com/uploads/4466379/normal_5ff0892c605d0.pdf
    • https://cdn.sqhk.co/tewisifupib/jb8Qgek/dovafijija.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/264a0ade-25da-4b87-90e0-2bd00335ee6c/oracle_database_10g_download_for_windows_10_64_bit.pdf
    • https://uploads.strikinglycdn.com/files/0117a848-3ed1-45fe-b03d-83c6ec9bed0c/89038620100.pdf
    • https://uploads.strikinglycdn.com/files/da86e94b-ee85-4dc8-b359-87c9702dab83/roku_3810r_specs.pdf
    • https://uploads.strikinglycdn.com/files/2f92dcc2-8071-4e93-8241-01f722feb8d5/wodudalapanasibi.pdf
    • https://uploads.strikinglycdn.com/files/a99878a2-af3d-4d53-a003-8ab66f7f32d8/95189320146.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f1f3.bin
728e0e086c52837d83dc5dbe1a4e226fa9e7fc2c60e85c8206588c80c070e7f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF1F3 5348 bytes
font_01_sfnt_off0001041c.bin
fb41ef88f9ba0c2236b920661b053009fc29482a4a4e776d074b99d1a409a3c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1041C 10684 bytes

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