Malicious PDF — malware analysis report

Static analysis result for SHA-256 83bdcf46e691b891…

MALICIOUS

PDF

130.9 KB Created: 2021-03-12 07:51:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: ff87708301e8de74adb2b9471ccf2820 SHA-1: 977c3eda749f8faa154fc25349066818d17ed184 SHA-256: 83bdcf46e691b8919616d358d34cfdadaa5432ca6427184fdf3768233e5eec9e
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with a critical heuristic firing for a 'PDF_SEO_LINK_FARM'. The primary URL, 'https://soxebez.ru/award?keyword=parti+politik+di+malaysia+pdf', suggests a lure related to Malaysian politics to attract clicks. ClamAV detection as 'Pdf.Phishing.Trojan' further supports a malicious intent. While no scripts were explicitly extracted, the nature of the links and the phishing detection suggest the PDF is designed to redirect users to malicious sites, potentially for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://soxebez.ru/award?keyword=parti+politik+di+malaysia+pdf PDF link annotation
    • http://tumbochka.space/windows_defender_application_guard_edge6n3q5.pdfIn PDF document text
    • https://wafanipo.weebly.com/uploads/1/3/2/6/132695839/nizolomulol.pdfIn PDF document text
    • http://snt-br.ru/dimirifoqv0lo.pdfIn PDF document text
    • http://tuimag.ru/the_hunger_games_mockingjay_part_1_original_motion_picture_soundtrack_brainewusu.pdfIn PDF document text
    • http://bcpreactiva-enlinea.com/definition_cultural_pluralismrfjnj.pdfIn PDF document text
    • https://tizusetupo.weebly.com/uploads/1/3/1/6/131607013/towozivefoselefu.pdfIn PDF document text
    • https://pedogore.weebly.com/uploads/1/3/2/8/132815008/6827545.pdfIn PDF document text
    • http://trendmobile.ru/9804911776wpuc5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://13ea8442-998f-4f14-ba3b-7f37e53a414c.filesusr.com/ugd/008a9f_1ffb3f0f8c6f4f34ae07c7203087a796.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tevomenil/tikafo.pdfIn PDF document text
    • https://c8d0f166-86fd-441b-8df5-aa5e6c6c7644.filesusr.com/ugd/f4b3af_7360ec9cdbe041f3bda85546b6ec731b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/rikolesafuwofar/hasselblad_500cm_for_sale_canada.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba9ef293-ce5e-4b90-afbe-b4c2a6a48236/57687936429.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f96927d9-d785-4420-bfd2-079e65ba23bb/mens_health_15_minute_workout_book.pdfIn PDF document text
    • https://7f3dc8b3-869c-44c5-82eb-14ae88d57796.filesusr.com/ugd/dc4ca1_61c504617e9f4f48b3d230c707d1781d.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/e64290eb-9265-4f46-a473-401a458064f8/72087618865.pdfIn PDF document text
    • https://9170d309-caca-4186-8987-bf6b40ce219c.filesusr.com/ugd/baef12_a1cd125a8e2d438f8b0272cf70fdbe1a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/waduzirader/daxosazeg.pdfIn PDF document text
    • https://s3.amazonaws.com/jepavilutabilel/detective_conan_theme_song_sheet_music_saxophone.pdfIn PDF document text
    • https://8cff94d3-ecab-4ea5-ad27-d3e67d02fd32.filesusr.com/ugd/2813e2_f8db1704436440c79fcf457ae834f7a9.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/28d6b09b-02f2-4448-8ecf-af1ee946e348/go_go_elite_traveler_owners_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/susonanezaj/sims_4_vampire_cheats_carls_guide.pdfIn 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_off0001bb97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BB97 5356 bytes
SHA-256: 06ed4958f2b1539d6af0e83c61e27b60962108ba31eb13a63de0676eac215974
font_01_sfnt_off0001cdc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1CDC1 15744 bytes
SHA-256: daa1bab7288a9354e104f036967aa2f2f9fdc51ad24eda8a376465ab83c39f5f

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