Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6d54a92ee86bb89…

MALICIOUS

PDF

75.4 KB Created: 2021-03-22 08:37:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0138e8219b6c0144ee0640eee69e23dd SHA-1: e505600fdd07d9a8e07be46713fd9c54eebde36f SHA-256: a6d54a92ee86bb89864dd607266c5f15d1a3a3ffbecb4d9f8e12a7c16ca3ed1c
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, identified by heuristics as a potential phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest a phishing attack pattern, likely attempting to redirect the user to a malicious website for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://mezovuduw.ru/award?keyword=applied+mathematics+pdf
    • https://wobereresexo.weebly.com/uploads/1/3/1/6/131606335/gaginazeran.pdf
    • https://rugovisatef.weebly.com/uploads/1/3/2/6/132682701/tolizos_lovanosop.pdf
    • http://testvvd.xyz/11603937921lwl7a.pdf
    • http://navevukosuso.mypressonline.com/84199392280.pdf
    • http://uaportal.site/57263315768jy2jj.pdf
    • http://vudasuti.mygamesonline.org/31747223601.pdf
    • https://gumebasa.weebly.com/uploads/1/3/4/5/134509515/e6436ebac5c17.pdf
    • http://theboldpantsproject.com/power_pressure_cooker_xl_lid_will_not_opent2gvv.pdf
    • http://persequenteamsohbet.com/identifying_polygons_worksheet_grade_4icmrh.pdf
    • http://kigumelez.medianewsonline.com/jonizetu.pdf
    • http://kigetipopizatij.getenjoyment.net/crafting_brand_positioning.pdf
    • http://vivadoctor.ru/catalasa_en_la_papaxwgxg.pdf
    • http://kubosikavudux.mygamesonline.org/91460711996.pdf
    • http://movawizaxaxato.mywebcommunity.org/sekiselekegizepi.pdf
    • http://mipexalazalekab.getenjoyment.net/argumentative_essay_about_immigration.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://sadoboxijowem.myartsonline.com/computer_capsule_for_ibps_po.pdf
    • https://uploads.strikinglycdn.com/files/0342223d-2de7-4e3a-b98a-fe0569185f68/char_broil_kamander_grill_recipes.pdf
    • http://xirexadugimog.atwebpages.com/control_of_the_astral_body.pdf
    • https://uploads.strikinglycdn.com/files/19f46367-9bf4-4fc5-b620-7d06f9d681bb/how_to_fix_short_cycling_heater.pdf
    • https://uploads.strikinglycdn.com/files/50911979-7048-47a2-b44d-d4daa60a447e/sibizudiwebogefepitiluzef.pdf
    • https://uploads.strikinglycdn.com/files/e30614d2-dd5b-4684-b685-ea2dc72ae6b2/pebopovexagi.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_off0000e721.bin
0216c8889fabcd35ddc05e2e361ffa5efb4efc8054ab258ab4ef9bae9764679c
pdf-font-stream PDF embedded font (sfnt) at offset 0xE721 5288 bytes
font_01_sfnt_off0000f8fb.bin
801871ef7fd8d6d586dcc24346ef61de37bd450fed79d9fdd7000510f0fe7688
pdf-font-stream PDF embedded font (sfnt) at offset 0xF8FB 11600 bytes