Malicious PDF — malware analysis report

Static analysis result for SHA-256 f366c855ed4af67a…

MALICIOUS

PDF

77.6 KB Created: 2021-03-23 09:20:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ba201d2b8963264e236f62efdf7d8680 SHA-1: d8ca7ec834513759433efd153318a01436c75ae8 SHA-256: f366c855ed4af67a6f2a7ecf768526ccf22c80596438d26304474104a9dd2637
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, likely for credential harvesting or further payload delivery.

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=standardized+test+prep+biology+answers+chapter+7
    • https://static.s123-cdn-static.com/uploads/4366000/normal_5ff8f66fc48dc.pdf
    • http://xofofumireke.mypressonline.com/acid_rain_introduction.pdf
    • https://cdn.sqhk.co/zatugudaxaji/Jhdhheo/golf_impact_bag_diy.pdf
    • https://cdn.sqhk.co/wixadigizal/vifhhij/33759608809.pdf
    • http://nibakelenixezas.getenjoyment.net/metisowokigixulumebova.pdf
    • https://static.s123-cdn-static.com/uploads/4422658/normal_5ff7d4ab4a844.pdf
    • http://fegivate.medianewsonline.com/what_does_the_word_bogey_mean_in_english.pdf
    • https://cdn.sqhk.co/pawapoma/dgdv8Vd/58114486124.pdf
    • http://wepisoja.mypressonline.com/49749987402.pdf
    • https://cdn-cms.f-static.net/uploads/4477164/normal_6014fbf504e35.pdf
    • http://rugegav.mywebcommunity.org/37842809606.pdf
    • https://cdn-cms.f-static.net/uploads/4378379/normal_600bc49b483a1.pdf
    • https://static.s123-cdn-static.com/uploads/4457279/normal_5fdcf08d80e37.pdf
    • https://cdn.sqhk.co/farategibod/mqghWgi/totuvanude.pdf
    • http://lesuxofozadize.mygamesonline.org/missing_411_ebook.pdf
    • http://manuximaxemeje.scienceontheweb.net/17787095525.pdf
    • http://diporesorojina.scienceontheweb.net/kptcl_junior_assistant_syllabus.pdf
    • https://cdn.sqhk.co/bipukawu/qghrLJm/jiruxajesamotomujom.pdf
    • https://cdn-cms.f-static.net/uploads/4459914/normal_603a66f2160c1.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://bogalibamadom.myartsonline.com/vapositokekix.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_off0000ece2.bin
15437074be9748186188d83cb914249996b5b344012d2861bc01d72593ec9f4c
pdf-font-stream PDF embedded font (sfnt) at offset 0xECE2 5904 bytes
font_01_sfnt_off00010116.bin
bdbbe4be817f7924fd5d654b63fd7c9eae161a0539a30e9bcef3982871aeca17
pdf-font-stream PDF embedded font (sfnt) at offset 0x10116 11620 bytes