Malicious PDF — malware analysis report

Static analysis result for SHA-256 06e10b49cb4ecde0…

MALICIOUS

PDF

79.5 KB Created: 2021-04-03 13:23:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: ed0dca5fa973412c462e0bef96bef691 SHA-1: 3d3df3f5712677b9d92a4d7362243d9527f8c8e4 SHA-256: 06e10b49cb4ecde0cd437dc946e07b6f159b612f7731d0b8b67264a23387dd38
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The PDF contains numerous external URIs pointing to a link farm hosted on disposable domains, suggesting a phishing or malware distribution scheme. While no scripts were extracted, the presence of external links and the link farm heuristic strongly suggest the document's purpose is to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://fokemale.ru/award?keyword=biopsychosocial+assessment+example+pdf PDF link annotation
    • https://cdn.sqhk.co/wabajevebe/6b21Ywj/zisaladutevi.pdfIn PDF document text
    • http://stankovit.ru/how_to_fix_ld_error_on_maytag_washerj67eq.pdfIn PDF document text
    • https://cdn.sqhk.co/joxipadij/GGhf6hi/wiloti.pdfIn PDF document text
    • http://kyponnik.online/tom_clancys_rainbow_six_siege_-_ultimate_edition_year_4lu000.pdfIn PDF document text
    • https://cdn.sqhk.co/fekurisakez/bijicV7/siguzinubemibuguno.pdfIn PDF document text
    • https://cdn.sqhk.co/wejawujagi/8lgghbU/maziwotozikaluxewoza.pdfIn PDF document text
    • https://cdn.sqhk.co/suwixowefa/haibhjJ/weather_forecast_new_york_city_14_days_celsius.pdfIn PDF document text
    • https://cdn.sqhk.co/peporewav/hhia1Hd/76477948875.pdfIn PDF document text
    • https://cdn.sqhk.co/susiwozobo/deghihq/zugajibijo.pdfIn PDF document text
    • https://cdn.sqhk.co/rumomezojeku/ebkDfhh/angina_estable_e_inestable_2016.pdfIn PDF document text
    • https://cdn.sqhk.co/kobadaxo/rDuNhea/35392785860.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
    • http://jekowatu.epizy.com/card_game_29_free_for_pc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5c5b3b8-c914-4963-808d-4b0ac382373d/seth_klarman_letter_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f00a1e21-b0ae-45c4-b51c-6db1468ade6a/how_to_prepare_for_iit_jee_mains_in_1_month.pdfIn PDF document text
    • http://jenetaponolinev.rf.gd/tocolisis_en_amenaza_de_parto_pretermino.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee1af379-811f-49aa-a3ae-5452092285bd/buddha_and_his_dhamma_in_marathi_audiobook.pdfIn PDF document text
    • http://gaxubamodenev.epizy.com/69650968826.pdfIn PDF document text
    • http://muxugozobizesex.epizy.com/measuring_tape_calibration_procedure.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2092c612-64ae-4dc9-93cc-2efb22d1fb7f/97846505215.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a5661ec-2760-4529-a0ef-3001e767dfe7/ashton_kutcher_baby_names.pdfIn PDF document text
    • http://taruligewonuna.rf.gd/8453303980.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f14d8126-9526-4a6c-98a2-53c8260a2218/catalina_3-in-1_convertible_crib_instructions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63f458fa-ecc8-4495-ac50-c426c94d4ea2/how_to_edit_in_open_office.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c3fa447-1b4f-460b-90af-cecda1901352/what_does_the_cannibalistic_monster_symbolize.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42e7f4f5-56df-4335-84f4-90dadfd02ebf/34689220972.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE1F 5304 bytes
SHA-256: 2ad1fb5efdb4c6c910e3d06127e026667f94f9fab61b6dad96d47b512b7bd531
font_01_sfnt_off0001000e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1000E 9968 bytes
SHA-256: 60a6339c1ad9a47b3518a72f8a12f7251fc853391175ccf77a4ac2e498d4ea8c
font_02_sfnt_off0001220f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1220F 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71