Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa969ea0e401c797…

MALICIOUS

PDF

86.0 KB Created: 2021-03-28 19:27:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 7420910157659c0d48558c37c684fd18 SHA-1: 9bc9e1013f6651d1a9ef0b9366349197e3d49675 SHA-256: fa969ea0e401c79704dc6aaeffe304122e5c254026484d124ad1adb595556c6c
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 0.9996

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://midufefew.ru/123?utm_term=bajrangi+bhaijaan+movie+songs+free++320kbps PDF link annotation
    • https://bobusenig.weebly.com/uploads/1/3/4/8/134866704/bd99f709b6318c0.pdfIn PDF document text
    • http://vuzuwul.getenjoyment.net/what_channel_is_peoples_choice_awards_2020_on_directv.pdfIn PDF document text
    • http://komaxinatobofe.medianewsonline.com/python_3_beginner_tutorial.pdfIn PDF document text
    • http://fonudesuwobulud.mygamesonline.org/catholic_stations_of_the_cross.pdfIn PDF document text
    • http://jidogirikar.mygamesonline.org/blank_biodata_form.pdfIn PDF document text
    • http://bupitubegedew.getenjoyment.net/37732135582.pdfIn PDF document text
    • https://xororawezajeber.weebly.com/uploads/1/3/5/3/135338150/miraxome.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/lolaritemukole/2017_subaru_forester_2.5_i_premium_standard_features.pdfIn PDF document text
    • https://c0b8f06b-4e98-4d3d-89ef-2f08caba629a.filesusr.com/ugd/0c8cc8_2bf9284f9e794f7888a40ff544a6fc0b.pdf?index=trueIn PDF document text
    • https://e05653fc-386e-4c8b-889d-738aee72c63e.filesusr.com/ugd/62421a_0d6c0a8a547d4237a9dd9dd9ea194611.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wutogugej/xojowuvawube.pdfIn PDF document text
    • http://lobopekogolo.onlinewebshop.net/zmodo_camera_setup.pdfIn PDF document text
    • https://s3.amazonaws.com/papuja/what_are_codes_and_conventions_in_film.pdfIn PDF document text
    • https://s3.amazonaws.com/bagisi/nikon_fg_value.pdfIn PDF document text
    • https://724418e0-3ace-43c1-abd8-628b4820fc71.filesusr.com/ugd/6df952_636b43e35b09450daeb2619e2ce3a258.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tomaxade/vaastav_songs_ringtone.pdfIn PDF document text
    • http://gubadif.myartsonline.com/bitencourt_direito_penal_parte_geral.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagobomap/metric_conversion_worksheet_and_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/kimone/how_much_does_epic_cost_for_private_practice.pdfIn PDF document text
    • https://f803bf1b-e1c2-47f6-a41f-c9785c88fbd4.filesusr.com/ugd/bf07b1_d653d3ae98b14e268e967a9c9317792f.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE8E 5820 bytes
SHA-256: 53aec3eca42aae3cd566bd340a6ed4a73f39f7f4ae8afa0ce472d2c98a081678
font_01_sfnt_off00010231.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10231 10836 bytes
SHA-256: 9aad4e4d97a14b7a31dd36dfd589f9e496d5bcd9bfc5c65576026ac115be43b6
font_02_sfnt_off0001274e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1274E 16096 bytes
SHA-256: 3bb08857b08983a257d5a2052628e18542fd51c8d29f5bbef87ea8b8ace00841
font_03_sfnt_off00013c17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C17 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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