Malicious PDF — malware analysis report

Static analysis result for SHA-256 06cd6832bb9769cd…

MALICIOUS

PDF

74.7 KB Created: 2021-06-05 00:32:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 6ce3ddf7429afc40ce2a868860d5d673 SHA-1: 68e14dd7bc377acd196606367bb6f6bb92146ab4 SHA-256: 06cd6832bb9769cd2718669f65535e70e84b848790354c1e172fa34845584ab2
126 Risk Score

Malware Insights

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

The PDF file contains embedded URLs, one of which, 'https://coretry.ru/pbw?utm_term=kenmore+elite+washer+de+error+code', is flagged as malicious and likely leads to a phishing or malware distribution site. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates the PDF is part of a link farm on disposable hosting, further supporting a malicious intent. Although no scripts were extracted, the overall structure and URL reputation strongly suggest a phishing or malicious content delivery attempt.

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://coretry.ru/pbw?utm_term=kenmore+elite+washer+de+error+code PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://febamizilaw.pbworks.com/w/file/fetch/144601986/ridikonatagakizapusesilo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/284aa2f8-f0a0-4927-97a7-fcc9abc631a3/what_causes_a_whirlpool_refrigerator_to_leak_water_inside.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29fd4004-e3b5-4752-a0cb-302b65e0a3da/wanugepewipizene.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44ce41d6-4fa1-46e1-83b4-8261aef900d1/tutorial_faststone_image_viewer_italiano.pdfIn PDF document text
    • http://tasonupopam.pbworks.com/f/donufuwaruxipudidi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea58dc35-93a0-42a0-b088-91a3f331ef15/61944538144.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/74771931-2b75-4187-b26a-bea7664665a2/how_many_death_today_covid_19.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/898f4ea4-7904-427f-9a57-8dee174e81ce/how_to_program_a_digital_tv_converter_box.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef2f9da7-2a08-4c6f-a4d2-53ee9d1b343f/mivik.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f80ca885-cc44-469b-8bc0-a594c485d6bb/rupomogiwafomidid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dac2a567-0c72-42a8-af86-805290a2988a/30432858895.pdfIn PDF document text
    • http://xalanupuzewo.pbworks.com/w/file/fetch/144423129/2013_jeep_grand_cherokee_srt8_owners_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1c4e7bd-24f6-4d59-b576-97e8e95673b5/hoover_power_scrub_deluxe_carpet_washer_model_fh50150_parts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2609f8d2-60fb-48c6-99e3-5e5ebbdae323/46427931098.pdfIn PDF document text
    • http://gexufak.pbworks.com/w/file/fetch/144560844/surviv.io_unblocked_crazy_games.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1fd00cf5-ee63-49c7-8cd4-24c5292cbc5d/arris_tm502g_speed.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/70af7a57-4761-4fd9-9858-8529c0406739/kobanupokijopumiju.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/07dc88e9-0f6d-4d6d-a536-91a6d775ab62/romavoxij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40ccdb02-9773-4682-99d0-32dc41e53f3d/50837715165.pdfIn PDF document text
    • http://juwelite.pbworks.com/w/file/fetch/144559269/numeros_divisores_de_1246.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0c7aa0d-7992-4bf2-a291-6f80e211124c/puwowavexefizosit.pdfIn PDF document text
    • http://fatakalewene.pbworks.com/f/77236874133.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/10d078ba-ee1b-4545-b91b-0288387a4bc8/apollo_rfz_125cc_pit_bike_motor_engine.pdfIn PDF document text
    • http://pojaweku.pbworks.com/w/file/fetch/144451629/cuanto_equivale_7_6_en_decimal.pdfIn PDF document text
    • http://rugewenuzed.pbworks.com/w/file/fetch/144426834/trke_photoshop_program_indir_cretsiz.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_off0000e84c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE84C 5240 bytes
SHA-256: fdd2eabed22e641b532d74a5db5bbac79e8d3380f577ff5b2abf92f0f9e74e49
font_01_sfnt_off0000fa01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA01 10484 bytes
SHA-256: 453485fce92cea7b07bfe5140f73f23287b135bac64a3c240f343a9f4648dd0b