Malicious PDF — malware analysis report

Static analysis result for SHA-256 722b5cff18eb3cf4…

MALICIOUS

PDF

86.3 KB Created: 2021-03-19 19:02:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fbd53b5b39136033c334227ad48d6844 SHA-1: 7ea3fc10c97d55ab5e1a6cc8fd63708536b20989 SHA-256: 722b5cff18eb3cf4972904ced202761f310483d0391b622973caf58b096f2a72
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, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a URL that is disguised as a French verb conjugation chart, likely to trick users into visiting a phishing or malware distribution site. No scripts were extracted, but the presence of external URIs suggests a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9983

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://botokaw.ru/strik?utm_term=french+verb+conjugation+present+tense+chart
    • http://mujezixebu.22web.org/xepovimofekos.pdf
    • http://titanof-filtr.ru/como_atualizar_o_android_tv_philcouxw0w.pdf
    • https://cdn-cms.f-static.net/uploads/4476270/normal_601913cc8b611.pdf
    • http://noxogejukebe.mypressonline.com/rezebogusabo.pdf
    • https://static.s123-cdn-static.com/uploads/4454303/normal_5fca521bbee89.pdf
    • https://cdn-cms.f-static.net/uploads/4446773/normal_60415dafcf75f.pdf
    • http://lady-bug.club/tetibuxvqvmi.pdf
    • https://static.s123-cdn-static.com/uploads/4374024/normal_5ff84aa035007.pdf
    • https://static.s123-cdn-static.com/uploads/4383582/normal_5fde1891dae96.pdf
    • http://fitnesspack.net/14842287596mxo80.pdf
    • https://cdn-cms.f-static.net/uploads/4449193/normal_604ca3d480e86.pdf
    • https://static.s123-cdn-static.com/uploads/4481280/normal_6002a541597d9.pdf
    • https://cdn-cms.f-static.net/uploads/4408352/normal_602150e031a9b.pdf
    • http://nagesebaz.iblogger.org/ximutura.pdf
    • http://sunugukumota.getenjoyment.net/72105690650.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/gopuze/dbs_update_service_employer_guide_gov._uk.pdf
    • https://s3.amazonaws.com/vovopafubipu/sql_format_decimal_as_percent.pdf
    • https://s3.amazonaws.com/pexodugosa/irony_worksheets.pdf
    • https://s3.amazonaws.com/fovezewi/adding_fractions_with_different_denominators_worksheet.pdf
    • http://kawerulim.onlinewebshop.net/boguxagolejizom.pdf
    • http://mujibise.epizy.com/16121785056.pdf
    • http://toduwez.epizy.com/digraph_ck_worksheets_free.pdf
    • https://s3.amazonaws.com/jevelel/jubivofusuguvu.pdf
    • http://zigazus.rf.gd/mubamufuxibosu.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec8d.bin
707f044220626673030db1e929683b7e6be6df4515348478205ae719871ec17a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC8D 3312 bytes
font_01_sfnt_off0000f86f.bin
2f55a903f6ad8feabe8e6a478b6bfa9ad3276bc6a59fc0cea8b30efcaf4b2165		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF86F 5396 bytes
font_02_sfnt_off00010ad1.bin
8bd840945cc11a4f68bc2fbba964f095c490ec66127b4ed90ca05c3f422906f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10AD1 12752 bytes
font_03_sfnt_off0001337f.bin
a858ad06ee9285ef990c8ccf5509e6bce71cae8afc7f99ba8a1dcaf33198b628		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1337F 16684 bytes

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