Malicious PDF — malware analysis report

Static analysis result for SHA-256 b08c01f3860453fe…

MALICIOUS

PDF

89.3 KB Created: 2021-04-03 10:20:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3669994141d82f8918c903d030c70a0e SHA-1: 4dd7698cd0dc94f6b351b3f4515d17df453f8bbc SHA-256: b08c01f3860453fe78e7506c16a97b9f6fa4880d3084b17e27f31a5de7846a41
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable domains, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a lure to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://xezojetit.ru/123?utm_term=keymander+setup+guide
    • https://bumiwawewa.weebly.com/uploads/1/3/5/3/135343946/josejawemigolagufu.pdf
    • http://euroshopme.site/volume_of_rectangular_and_triangular_prism_worksheet5acqy.pdf
    • http://thesimplycompleteseries.com/4805450694782o0y.pdf
    • http://arfesopt.com/5934786490332vtb.pdf
    • http://custits.space/zuxivajumojuzakipelona3sn9.pdf
    • http://legiontry.online/scientific_american_psychology_3rd_edition_lichtshfb1.pdf
    • http://oneshops.space/glute_hypertrophy_program_robin_gallant3cctg.pdf
    • http://gbo.guru/ripabofanakemajopapodagsq4e.pdf
    • http://com-connexion.xyz/boston_market_chicken_pot_pie_calorie_countbu914.pdf
    • http://yyyyyyhhhhh.space/best_gem_mining_in_western_north_carolinaa7nkd.pdf
    • https://giwesozuxazo.weebly.com/uploads/1/3/4/4/134478021/2fb7cf046.pdf
    • http://nanolenka.xyz/how_do_you_find_the_volume_of_a_cylinder_with_diameter_and_heightxl1pk.pdf
    • https://paluwewokob.weebly.com/uploads/1/3/2/7/132712057/a5321136bd4b.pdf
    • http://trells.space/83361125393uqkgb.pdf
    • http://pupesotiv.22web.org/bise_sargodha_first_year_date_sheet.pdf
    • https://givolejemaxo.weebly.com/uploads/1/3/5/3/135345859/c2bbdc45.pdf
    • https://jikodidujur.weebly.com/uploads/1/3/5/3/135319234/bamidikezufajif.pdf
    • http://vienvozvrat.site/60878464202i2a7e.pdf
    • http://voztrans.ru/game_of_thrones_graphic_novel_set56hd9.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/c14923f4-0d45-4b7a-8864-a79dafc5bc51/nokururamomuni.pdf
    • http://jenamer.rf.gd/ordinary_annuity_sample_problems.pdf
    • http://bovuzigaratufob.rf.gd/deguxarojasilamefobemuvaz.pdf
    • https://uploads.strikinglycdn.com/files/24627991-73ee-4678-bd4b-83f8dc573ccf/el_caballero_de_la_armadura_oxidada_capitulo_1_y_2.pdf
    • http://mulotuzasokafo.epizy.com/fort_lauderdale_airport_shooting_report.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011d7d.bin
cc82a37dc36a6356fd9b2789369f8aac7dbe318e7b506961d9bac01153d74da9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11D7D 5320 bytes
font_01_sfnt_off00012f8b.bin
3e4d20692233e18f6b9a460effc67a4d44e1b2c570bb93a41349c693a4ac92c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12F8B 11972 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.