Malicious PDF — malware analysis report

Static analysis result for SHA-256 36eb2418241c42e9…

MALICIOUS

PDF

79.7 KB Created: 2021-03-13 22:33:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a86c3e928d44e64397b0bde7d2c01e77 SHA-1: 9ff53be3f3ba0749a537ffdf89840e8dfb0dd01e SHA-256: 36eb2418241c42e98bfea8aefb5ab69df6d5efd83ba73d1192c6bbd8e29d8bb9
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, and ClamAV detection confirms its malicious nature. The ML classifier also strongly flagged the PDF as malicious. The document body, though heavily obfuscated, suggests a lure related to an 'award' or 'journal', consistent with phishing or malware distribution tactics.

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://jacksth.ru/award?keyword=advertising+pdf+journal
    • https://tugajepefur.weebly.com/uploads/1/3/1/4/131453805/tozekezej.pdf
    • http://detonic-ufficiale.website/como_buscar_un_titulo_de_propiedad_en_mexicohmkjt.pdf
    • https://cdn.sqhk.co/wexifidobafo/jiioh5s/esl_one_germany_playoffs.pdf
    • http://ruwaxidalemib.iblogger.org/wendys_company_nutrition_zoodles.pdf
    • http://zhenskiizhurnal.ru/selatarodexupasukopuvit2ibi.pdf
    • http://uuuuull.space/simisos21kdt.pdf
    • https://cdn.sqhk.co/jesuzedavoti/dgiZigg/morgz_pause_challenge_meme.pdf
    • https://loribipusav.weebly.com/uploads/1/3/1/3/131379532/8853432.pdf
    • https://cdn-cms.f-static.net/uploads/4369928/normal_6013b6615cc5c.pdf
    • https://cdn-cms.f-static.net/uploads/4384150/normal_602c5f41e68f6.pdf
    • https://zufodivovogopot.weebly.com/uploads/1/3/1/3/131383523/dc572569.pdf
    • http://idealsit.fun/3148808755yg2b6.pdf
    • https://pebabole.weebly.com/uploads/1/3/4/6/134698512/a8a489308ef9f.pdf
    • http://firstflirts.site/ronasajedaxibagukut6ymu.pdf
    • https://cdn-cms.f-static.net/uploads/4420245/normal_6033729b5e0a3.pdf
    • https://bobuwazubugomu.weebly.com/uploads/1/3/4/4/134494734/f1dbe.pdf
    • https://cdn-cms.f-static.net/uploads/4374024/normal_601806c31ae4a.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://firuxafuxu.rf.gd/vutofafezut.pdf
    • http://mutifesojare.epizy.com/76044122546.pdf
    • http://xojixitutatafu.epizy.com/neniraruxo.pdf
    • http://mizixizomafupez.epizy.com/dabaguvisakilevufu.pdf
    • http://borinalujid.epizy.com/k_e_c_full_form.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_off0000fa87.bin
11c15cfbcfa6883bfc3b29afa66a2a90f7800cdb8032d3a91594e34af5670ee5
pdf-font-stream PDF embedded font (sfnt) at offset 0xFA87 5336 bytes
font_01_sfnt_off00010ccb.bin
221658db2633f565bfa74b729ad5090d17cea1e64e3d19c982c58a8957d1c80e
pdf-font-stream PDF embedded font (sfnt) at offset 0x10CCB 10732 bytes