Malicious PDF — malware analysis report

Static analysis result for SHA-256 abc556abbd5ccf78…

MALICIOUS

PDF

78.3 KB Created: 2021-04-30 19:07:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 009fb3cfb6ec1ae001225a8b2a40fcd7 SHA-1: 54f809883172431be1b253c616c4ad6b94f0f1ac SHA-256: abc556abbd5ccf78d0759db47ac371ec2824ef4415d9e5d546f6e41745703324
156 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://pelibifir.ru/strik?utm_term=how+do+i+find+the+code+for+my+rca+universal+remote PDF link annotation
    • https://cdn.sqhk.co/fugovigul/ghOVE8X/lemipafuzogijat.pdfIn PDF document text
    • https://cdn.sqhk.co/fofesali/jehi4s1/gmod_alien_assassin.pdfIn PDF document text
    • https://cdn.sqhk.co/dujagazatad/iMKigjj/75262459621.pdfIn PDF document text
    • http://lesanuzununefa.22web.org/monthly_project_timeline_template_excel.pdfIn PDF document text
    • https://cdn.sqhk.co/wotabefej/iWiiiav/90244984937.pdfIn PDF document text
    • https://cdn.sqhk.co/gidowoji/cgjigQV/zas_zombie_apocalypse_simulator_mod_apk.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/wovigebi/capitamall_trust_annual_report.pdfIn PDF document text
    • https://s3.amazonaws.com/vofadoloves/the_monkey_king_story_book.pdfIn PDF document text
    • https://s3.amazonaws.com/ropuba/coulomb_s_law_derivation.pdfIn PDF document text
    • https://4192d618-ecd7-4808-8485-efd4d6773ded.filesusr.com/ugd/17a5db_52e2ade89cd543cdb11e463ec81629d1.pdf?index=trueIn PDF document text
    • http://vimedunofonuw.rf.gd/gta_4_android_aptoide.pdfIn PDF document text
    • https://s3.amazonaws.com/moduluzuxikari/32664257174.pdfIn PDF document text
    • https://4cf6c2b4-cd84-4b73-83b1-bf7f441162b2.filesusr.com/ugd/e50c99_a0b47df627b54304923a05126be5d91d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/mexavofezoxi/how_much_mercedes_service_b_cost.pdfIn PDF document text
    • http://bozexefuj.epizy.com/belodelajilub.pdfIn PDF document text
    • https://b20aee1f-b1b7-4e4e-be5e-d884e4ece670.filesusr.com/ugd/10e3af_8bc249c518124649a58915f1ae6fbae5.pdf?index=trueIn PDF document text
    • http://pefodajisotavuk.rf.gd/93908575482.pdfIn PDF document text
    • http://sesilav.rf.gd/biochemistry_books_for_medical_students.pdfIn PDF document text
    • http://zudetifaxazuwe.rf.gd/sat_test_tutoring_near_me.pdfIn PDF document text
    • https://s3.amazonaws.com/welanisowari/83723566880.pdfIn PDF document text
    • https://49b821e7-ee7e-41b4-809b-d0417b8c1ddf.filesusr.com/ugd/927743_aa0d822fb0e54acb9dc9981133aa68e7.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/levumoduf/voxengo_voxformer_vst.pdfIn PDF document text
    • http://rugeritubaduw.epizy.com/cool_text_fonts_free.pdfIn PDF document text
    • https://5a1138df-423b-4a5d-a7c7-36223740754e.filesusr.com/ugd/a72fa8_cf143e960ad248408477179c1d6d02c0.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_off0000f3e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3E7 5476 bytes
SHA-256: 26f04f66bd80c89a6ed7617aad72af8a4930b83a4cc52b3ccce24dde07b279c3
font_01_sfnt_off00010676.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10676 10800 bytes
SHA-256: 839ffa1ce3a696fb01c828436c81aa1ee7891db03f0c539b846ad7dd65a55c20

Open this report in the interactive analyzer, or submit your own file for analysis.