Malicious PDF — malware analysis report

Static analysis result for SHA-256 2630419bd8207061…

MALICIOUS

PDF

94.7 KB Created: 2021-03-19 22:39:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bcbbac2ef37bb3165e71666d310196cd SHA-1: 2398f120142b3a097f07f85175a85bc2370286b4 SHA-256: 2630419bd8207061c268b5cd9275b0057e25b9167bea0ff36172bcf55cfa2342
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The document body, though heavily obfuscated, suggests a lure related to 'cervical isometric exercises pdf', which is a common tactic for phishing or malware distribution.

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://bologen.ru/award?keyword=cervical+isometric+exercises+pdf
    • https://static.s123-cdn-static.com/uploads/4393345/normal_5fcd3cb0d297e.pdf
    • http://boldly-grow.com/color_palette_names4qg1k.pdf
    • http://kukushpa.fun/black_boy_joy_shirt2wmfl.pdf
    • https://cdn-cms.f-static.net/uploads/4485699/normal_6023a24450fec.pdf
    • http://wuxetij.mypressonline.com/74298320180.pdf
    • http://rigoditibalun.mywebcommunity.org/principles_of_technical_drawing_giesecke.pdf
    • http://islemleriniz.org/88848823999kp0hm.pdf
    • http://luminar4-download.xyz/sas_zombie_assault_409q5h.pdf
    • http://degifutuv.scienceontheweb.net/makalah_cacar_air.pdf
    • https://fumozowafujazuv.weebly.com/uploads/1/3/5/3/135331302/5339068.pdf
    • https://static.s123-cdn-static.com/uploads/4408589/normal_5feea06e7650e.pdf
    • https://cdn-cms.f-static.net/uploads/4462708/normal_6027ea392ef68.pdf
    • http://edapog.online/global_citizenship_education_environmental_issues41mlq.pdf
    • http://samo-katim.ru/egyptian_mythology_quiz_questions_and_answers6fld7.pdf
    • http://fitokapss.xyz/22752702195bl56v.pdf
    • https://static.s123-cdn-static.com/uploads/4388612/normal_5fc89f8129dee.pdf
    • https://ponuxarazuzega.weebly.com/uploads/1/3/5/3/135328107/1616031.pdf
    • https://monibobur.weebly.com/uploads/1/3/0/7/130776122/c76d6135.pdf
    • https://vepiniripalur.weebly.com/uploads/1/3/4/2/134235349/mujataxixo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://jatugeset.atwebpages.com/88609043757.pdf
    • https://s3.amazonaws.com/bawalidamovidud/celestial_coordinate_systems.pdf
    • https://s3.amazonaws.com/jiguwuzobozobaz/3555300549.pdf
    • https://s3.amazonaws.com/gonima/dead_cells_ios_free.pdf
    • https://s3.amazonaws.com/kavugusepe/ishmael_by_daniel_quinn_audiobook.pdf
    • https://s3.amazonaws.com/kavifunaruvi/januluguwufamovupir.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_off000134b9.bin
b828946720f1740d95ab3755965590592f4d525be933daed3ce8a3cdf16f8e3f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x134B9 5336 bytes
font_01_sfnt_off000146cc.bin
1dcfc02ff7bedef725348222ea79e00946f869863a7948b8aa78c5228baadbca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x146CC 11292 bytes

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