Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebddc6a1bb67ffb4…

MALICIOUS

PDF

83.7 KB Created: 2021-05-14 17:49:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: c51645bd411c89eeaa205c726c402ebf SHA-1: 3df6783a870ffeedeaeea28af723afcb05519cfb SHA-256: ebddc6a1bb67ffb41e09a6eec738a17c75f2c49368ad78cde0821f28218c809b
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with one prominent URL leading to a domain associated with malicious activity. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect the user to a compromised or malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/strik?utm_term=how+to+pair+xfinity+xr2+remote+to+cable+box PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4408475/normal_60382e6b13e15.pdfIn PDF document text
    • https://cdn.sqhk.co/dimosiwela/ighixhc/we_wish_you_all_the_best_in_spanish.pdfIn PDF document text
    • http://dikegebe.mygamesonline.org/4489068042.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366402/normal_5fdbf12576748.pdfIn PDF document text
    • https://cdn.sqhk.co/rapalaxob/Hjejjcw/filelefomuzaz.pdfIn PDF document text
    • https://cdn.sqhk.co/senuziker/8hfBhbU/jailbreak_amazon_fire_tv_cube.pdfIn PDF document text
    • http://domainlimax.xyz/2229538601720yp9.pdfIn PDF document text
    • http://tradebot.space/dnd_5e_magical_secrets_picks214b2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466659/normal_60095e5e4fe46.pdfIn PDF document text
    • http://leniwatojetojem.medianewsonline.com/gupaz.pdfIn PDF document text
    • https://cdn.sqhk.co/wametofenuwo/bjajgib/bisedokufopil.pdfIn PDF document text
    • http://rorogudadusosej.getenjoyment.net/doctor_appointment_form.pdfIn PDF document text
    • https://cdn.sqhk.co/pibepufas/7rhgjh6/calculator_app_for_ipad_air.pdfIn PDF document text
    • http://vumonivaxozutod.mypressonline.com/bunitabuzadivivuletu.pdfIn PDF document text
    • http://bnatural.space/analytical_geometry_grade_12_notes3afsv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tobaziw/zucchini_cheese_sticks_nutrition_information.pdfIn PDF document text
    • https://s3.amazonaws.com/tapexiw/zetiluloramarenudozele.pdfIn PDF document text
    • https://s3.amazonaws.com/batiku/79967277695.pdfIn PDF document text
    • https://7fad2989-91b8-457c-89bc-9a0e7aeef19f.filesusr.com/ugd/b03ff3_6087d775b6b048aa96afffd4e012b26a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xurixado/wugadegaxezefaf.pdfIn PDF document text
    • https://f45985d3-969e-4a4b-a16b-f92b7c881388.filesusr.com/ugd/20da2d_930aad97575542c88b7b5d001dace977.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wupuxus/tipigajisudefunobitonar.pdfIn PDF document text
    • https://aefb6378-f3ca-470a-b9d2-22936542d087.filesusr.com/ugd/fe129c_0754a0c0a2f6479ab1f1f9a539b2479b.pdf?index=trueIn PDF document text
    • https://d8acad56-eb9a-42d1-a06c-a695c5b02328.filesusr.com/ugd/0ad6c7_aff3132ff1954ebd9bd2a2b9c284c783.pdf?index=trueIn PDF document text
    • https://5d94d51b-2702-4b64-8df3-eadd022f3edc.filesusr.com/ugd/2ddd39_c397e4d0993e4401b930c1c8f4ea3f5b.pdf?index=trueIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000108d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108D4 5480 bytes
SHA-256: 96b22228811a7bccb016b91c28161bb1758ca250f38dc7085614784ae253dd8d
font_01_sfnt_off00011b7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B7F 10972 bytes
SHA-256: 5c0b0d7fdbd922ed124145230237f425d015274b2f61cb5004f57d11b21d875d

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