Malicious PDF — malware analysis report

Static analysis result for SHA-256 e49035716f16f3fd…

MALICIOUS

PDF

80.4 KB Created: 2021-03-20 23:21:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0644fdbaa9163439ca7bac58b187f929 SHA-1: 9064efe59e8f7c0a107d60eea54f605846737ea9 SHA-256: e49035716f16f3fd5645e018eb0fe6e1b3bff64099d69f84a8838c9a37ca7018
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically identified as Pdf.Phishing.Trojan. It contains an embedded URI pointing to 'dafemum.ru', which is likely used to host a phishing page or download further malicious content. The document body, though heavily obfuscated, suggests a lure related to software cracking.

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://dafemum.ru/wix?keyword=easeus+license+code+crack
    • https://static.s123-cdn-static.com/uploads/4385614/normal_600023aa32227.pdf
    • http://itslm.fun/gokikujadivjvipv.pdf
    • https://cdn-cms.f-static.net/uploads/4454161/normal_6055771f3e1ff.pdf
    • http://liberum.sportsontheweb.net/calendario_2020_con_semanas.pdf
    • http://car-den.ru/corian_worktop_manufacturers60dyr.pdf
    • http://straponartist.com/the_facebook_sonnetbw855.pdf
    • http://tebafurunaxinuj.getenjoyment.net/java_programming_tutorial_with_examples.pdf
    • http://tewatag.medianewsonline.com/synonyms_dictionary_free_download.pdf
    • http://paganel.world/shred_diet_cookbookl2n8r.pdf
    • https://cdn-cms.f-static.net/uploads/4471692/normal_602cd8564faa1.pdf
    • http://foyou.store/dfrobot_turbidity_sensor_datasheetjvedd.pdf
    • http://itawegan.fun/jusarurifuzonozit8vgp5.pdf
    • https://dapasubasawesol.weebly.com/uploads/1/3/4/3/134383907/vifivevosubul.pdf
    • http://trysalon.xyz/mechanical_engineering_student_resume_template5wwjg.pdf
    • http://com-signto5.xyz/linear_function_domain_and_range_formulaguqck.pdf
    • https://medumoxil.weebly.com/uploads/1/3/1/0/131070238/2637619.pdf
    • http://iwhite.space/is_flavoured_soy_milk_good_for_your_heartx5aap.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://nononulavojiki.myartsonline.com/hamilton_beach_food_steamer_review.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_off0000fd84.bin
b323bd3fb2f3488b477b97b55db387ad105bebfacfd6f4e40c890578a3988ec9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFD84 4952 bytes
font_01_sfnt_off00010e6a.bin
4343052b036726ccf53eb8442b255e1a1f76062cd9b4bd4af0ba97fd9168cde5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10E6A 11272 bytes

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