Malicious PDF — malware analysis report

Static analysis result for SHA-256 d29ae5c99d5976b3…

MALICIOUS

PDF

74.2 KB Created: 2021-03-17 21:30:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d247dedc580878ec22420e7d12620930 SHA-1: 0d0c2ffb1243d8755900618a00ac571e4e4f1a97 SHA-256: d29ae5c99d5976b32d7ff9ada905cc92c7289d5ee95afff6447952d598aa3f87
96 Risk Score

Malware Insights

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

The file is a PDF document that contains a URL leading to a malicious domain. The document body, though heavily obfuscated, appears to be related to a quiz, suggesting a lure for phishing or malware. ClamAV and ML classifiers flagged this PDF as malicious, indicating a high likelihood of malicious intent. The embedded URL is the primary indicator of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://botokaw.ru/wix?keyword=6.2+section+quiz+process+of+meiosis+answers
    • http://ogranicbio.fun/vanogofoxekabiwajabanikusvimfo.pdf
    • https://static.s123-cdn-static.com/uploads/4387235/normal_5ffbbcd78ad65.pdf
    • https://static.s123-cdn-static.com/uploads/4373240/normal_5fed2f3091331.pdf
    • http://zugapuvu.mywebcommunity.org/what_is_long_run_cost_analysis.pdf
    • https://cdn.sqhk.co/nizaveni/c8haOha/77620509489.pdf
    • https://cdn.sqhk.co/mesojofu/Lihhjfu/wiczenia_gramatyczne_angielski_klasa_5.pdf
    • http://xomutukegadoj.mypressonline.com/sofa_score_sepsis.pdf
    • http://winoorama.site/what_words_describe_clouds6jpcq.pdf
    • http://nibewubixela.getenjoyment.net/che_guevara_biography_in_telugu_download.pdf
    • http://aydym.club/bewiwarezinesafuwewitevi32qr5.pdf
    • http://nawitebexu.medianewsonline.com/biztalk_server_2020_tutorial.pdf
    • http://goodsun.fun/visitor_canadian_visa_lottery_form5rarv.pdf
    • https://cdn.sqhk.co/sebutarukaw/jgjjajj/umc_emergency_room_el_paso_tx.pdf
    • https://cdn.sqhk.co/xupodafib/VIhhhhD/54789574130.pdf
    • http://com-servers.online/lugin8r9yv.pdf
    • https://cdn-cms.f-static.net/uploads/4475719/normal_6040184ab24a5.pdf
    • http://moradudipomibo.mypressonline.com/93641740335.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://tofujuwo.onlinewebshop.net/mojewixusafukid.pdf
    • http://roxujewov.myartsonline.com/zonibuvejexuvorolusivoxi.pdf
    • http://japamitafixe.myartsonline.com/16816910577.pdf
    • http://wadoromutisagar.myartsonline.com/91169824387.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_off0000e4ae.bin
2615155ab41282959d8f971996e318ebdc026d1af5784a67370cb30324bc4ad7
pdf-font-stream PDF embedded font (sfnt) at offset 0xE4AE 5620 bytes
font_01_sfnt_off0000f7d8.bin
8af3f898bca05330f54de88d320899c6085879a821f1e72b307c34a45cbe48a7
pdf-font-stream PDF embedded font (sfnt) at offset 0xF7D8 10452 bytes