Malicious PDF — malware analysis report

Static analysis result for SHA-256 58e842dc125240d2…

MALICIOUS

PDF

82.8 KB Created: 2021-03-29 19:01:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 298896814d2808ba98012193ec6d6883 SHA-1: 8ed4d1878cd8ec29f686b4f2c6fd4cd912506364 SHA-256: 58e842dc125240d2f6d3eab66cfea53a3f80807ccf83638e968ac66d08f233b7
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 phishing or trojan payload. It contains an embedded URL that directs users to a suspicious domain, likely for credential harvesting or malware delivery. The document body, though heavily obfuscated, appears to be a lure related to 'alimentos transgenicos pdf articulo'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://leonvi.ru/award?keyword=alimentos+transgenicos+pdf+articulo
    • https://cdn-cms.f-static.net/uploads/4379959/normal_6051fb2c4fe7e.pdf
    • https://zekenegelu.weebly.com/uploads/1/3/4/3/134390475/a19623e89af827.pdf
    • https://rekoxexegatetun.weebly.com/uploads/1/3/1/4/131452740/kavumexikasot-nufope-venufipibag.pdf
    • https://tajurasexir.weebly.com/uploads/1/3/1/6/131606020/5425785.pdf
    • https://mutovowi.weebly.com/uploads/1/3/4/8/134862221/jimikasoja.pdf
    • http://naxaliref.iblogger.org/indesign_print_booklet_export.pdf
    • https://cdn-cms.f-static.net/uploads/4391319/normal_604ec0e58d96d.pdf
    • https://cdn-cms.f-static.net/uploads/4409801/normal_604218a44d4ac.pdf
    • http://dufazesiz.mywebcommunity.org/43064713453.pdf
    • http://rekugegik.scienceontheweb.net/millennium_problems_in_mathematics.pdf
    • http://ramuwesitavoz.mywebcommunity.org/tanatologia_forense_para_concurso.pdf
    • https://dedopaka.weebly.com/uploads/1/3/4/4/134498192/kijoziru.pdf
    • https://cdn-cms.f-static.net/uploads/4403117/normal_603b3b562bd84.pdf
    • https://cdn-cms.f-static.net/uploads/4445106/normal_604f1dfbd00da.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://xesepodine.rf.gd/lelodeketadenerixerumeg.pdf
    • http://mesekotizel.epizy.com/cada_del_cordn_umbilical.pdf
    • http://dubured.rf.gd/4382482952.pdf
    • http://givorajosi.rf.gd/42986032109.pdf
    • http://kutijizon.epizy.com/characterization_chart.pdf
    • http://jegafat.rf.gd/71008784002.pdf
    • http://wuwomuwudawim.epizy.com/6051512394.pdf
    • http://renemived.epizy.com/6.0_powerstroke_manual_transmission_fluid.pdf
    • http://xirakogo.epizy.com/ielts_academic_reading_answer_sheet.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f780.bin
09558bdabf1a1d2a14dbc2431fb69827834ed5b8d2b4b4f66880fde0696f9d0b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF780 5344 bytes
font_01_sfnt_off0001098d.bin
491d2c0df59b0eca6ff9a72269402165414439ad3e439f3776b9cc6bf70f7b8c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1098D 11252 bytes
font_02_sfnt_off00012e1d.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12E1D 4324 bytes

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