Malicious PDF — malware analysis report

Static analysis result for SHA-256 6adb708c2e70d5bd…

MALICIOUS

PDF

80.8 KB Created: 2021-04-07 02:28:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 6a94025c9fce822ed2d92a994f7727a2 SHA-1: 94d10511d085b3efdde307132926e758dc74bc16 SHA-256: 6adb708c2e70d5bd9c36ad2a4839939d4b4bb539b63c9b9768f5e2fcddc8b41b
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 0.9961

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://fokemale.ru/strik?utm_term=genie+pro+9800 PDF link annotation
    • http://movikewenatorug.iblogger.org/audio_biblical_pronunciation_guide.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kasapesokegu.rf.gd/buddha_boy_book.pdfIn PDF document text
    • https://94ac7338-8c66-48ed-b7e4-01cccba3eff0.filesusr.com/ugd/9b8421_c0e95380869e4a6895afe2df3cb9c6de.pdf?index=trueIn PDF document text
    • https://32b33340-d9da-4ef7-b3bd-a0ac5134eb71.filesusr.com/ugd/adfa6f_948edc67c68d4a57b565a4fce602ed4f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jubiferekaka/best_topic_for_an_aa_meeting.pdfIn PDF document text
    • https://s3.amazonaws.com/latufenaw/percy_jackson_sea_of_monsters_cast.pdfIn PDF document text
    • http://bixejefasi.epizy.com/rosen_gayer_public_finance_download.pdfIn PDF document text
    • https://s3.amazonaws.com/jexijer/dantes_inferno_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/kukazowox/37161394693.pdfIn PDF document text
    • https://s3.amazonaws.com/robumuduluwise/12160996520.pdfIn PDF document text
    • https://63995da9-74be-4895-8497-a4fa53c9845d.filesusr.com/ugd/788c84_63a708d6d40942c0952b0e3c5e92776c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lorugipopuxe/jqgrid_number_formatter_example.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ebcd9392-fcb5-4929-a9eb-a15829dd548b/how_to_pair_versa_lite_with_iphone.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ba3ad3b-e931-4f94-ace8-f90daa4dd4e8/elastic_band_workout.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eecaa8fb-209e-4957-95b8-7e24a9a7600a/shakespeare_julius_caesar_quotes_friends_romans_countrymen.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df2c6bd8-f1eb-4d54-81e4-a4e54ad6d737/14343143689.pdfIn PDF document text
    • https://s3.amazonaws.com/kujesulad/fetivuzexebezizumivekuk.pdfIn PDF document text
    • https://s3.amazonaws.com/gapuruxumeg/the_ultimate_guide_to_tarot_card_meanings_download.pdfIn PDF document text
    • https://2ac8321c-28d8-41c8-ac7a-99137a6fe030.filesusr.com/ugd/157ee0_57e49d7357a64e27aeb36bcba0ce49e1.pdf?index=trueIn PDF document text
    • https://aa514bbb-a96e-4bc9-8ff3-0ca2edd1104f.filesusr.com/ugd/3fc21f_e1c83783a6bf4fc6a62a2c8011547463.pdf?index=trueIn PDF document text
    • http://faperolakaf.rf.gd/ghatna_chakra_history_book_in_english.pdfIn PDF document text
    • https://fdb4f28e-c637-431f-967d-457feef73efb.filesusr.com/ugd/cf5aa9_f45d28f296294284a4521f7d235931a9.pdf?index=trueIn PDF document text
    • https://a179b4bb-f9e1-4b0b-8685-f881d2afde68.filesusr.com/ugd/0fdb6d_45903bf52a274b7d9556aa7b5732f859.pdf?index=trueIn PDF document text
    • https://50b7e5d6-ab0e-41ff-bbcb-47d024e5c277.filesusr.com/ugd/45d8ab_990e64f3857e47dc901dc9e182962f3f.pdf?index=trueIn PDF document text
    • https://8ed62699-7d02-4439-b935-4286882ef7d4.filesusr.com/ugd/229b11_52524e56f43e423b95d32062eae7e541.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tinajabizoreguf/dagannoth_prime_guide.pdfIn PDF document text
    • http://denitotogu.epizy.com/spotify_premium_free_on_iphone.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8461097-b665-4e94-9eb7-6a521c3bc897/los_juegos_del_hambre_sinsajo_parte_3_reparto.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_off0000f815.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF815 4916 bytes
SHA-256: 92d4473c50df4623ce14e433adf3ce144f80c0e766caa5c40c28097e34ab5713
font_01_sfnt_off000108e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108E2 13548 bytes
SHA-256: 8c1d8c8d730f11b54c87d5a890afeacb6a939442f088faa294e61844d704921a