Malicious PDF — malware analysis report

Static analysis result for SHA-256 96e8c5a02923fdaa…

MALICIOUS

PDF

75.3 KB Created: 2021-03-25 00:29:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: ca22f3d2fb17a55643cb6e7969bf2524 SHA-1: 2f618730ce8cd826cd120f7b35ccca1d8ae196bf SHA-256: 96e8c5a02923fdaa668553ca133b75efae253c019cc907b0bc0eeb63149075ff
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 0.9993

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://dafemum.ru/strik?utm_term=what+is+tronic+transmission PDF link annotation
    • http://justiciaforjustice.com/2012_jeep_grand_cherokee_overland_summit_0-60hvh72.pdfIn PDF document text
    • http://drive4mclaneaustell.com/arabic_number_in_englishrznf6.pdfIn PDF document text
    • http://ludesajezopaju.medianewsonline.com/50821735307.pdfIn PDF document text
    • http://batmbatm.ru/purpose_driven_life_free_download4lftk.pdfIn PDF document text
    • http://kavelizopepi.mywebcommunity.org/how_to_make_a_storage_bench_from_pallets.pdfIn PDF document text
    • http://vevaxogejaz.scienceontheweb.net/31299205801.pdfIn PDF document text
    • http://prosale.company/14426837465ej9cy.pdfIn PDF document text
    • http://vashmaster.info/the_pact_movie_lifetimetvbn1.pdfIn PDF document text
    • http://lamanixumerad.mypressonline.com/cracking_the_genesis_code.pdfIn PDF document text
    • http://tuworiki.22web.org/763159953.pdfIn PDF document text
    • http://zodelem.mygamesonline.org/cs_lewis_miracles.pdfIn PDF document text
    • http://nexofozupugasi.mywebcommunity.org/sukegazid.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/eda71b02-b948-4d58-9c96-80b07682c542/best_chest_resistance_band_exercises.pdfIn PDF document text
    • http://kolazedagudobok.rf.gd/pembuatan_kertas_dari_ampas_tebu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c39b5a0-609d-49ab-853f-afdbca5707a7/how_to_set_orbit_sprinkler_timer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/35ab4616-46dc-4df4-af10-f5d278776b68/how_much_do_data_science_majors_make.pdfIn PDF document text
    • http://duvodix.myartsonline.com/the_purpose_of_writing_a_personal_narrative_is.pdfIn PDF document text
    • http://masusoxowep.onlinewebshop.net/yasin_sharif_in_urdu.pdfIn PDF document text
    • http://wasalesex.epizy.com/free_to_air_tv_guide_perth_sunday.pdfIn PDF document text
    • http://jalasofumikom.rf.gd/pufesefa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7995187-d603-4ae5-bd27-cd3101beb40a/20307403182.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22586e21-6b80-493d-9266-f1a001e9517d/fisher_price_rainforest_jumperoo_height_limit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac7c2cdc-f785-4eae-ad50-b302f53ac7de/51303990568.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_off0000eb67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB67 5020 bytes
SHA-256: 96303c224bcafbbad6dab2c54616b5302f41218344b049a9bc4ab4e55893b9d6
font_01_sfnt_off0000fc5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC5B 10368 bytes
SHA-256: b79e82aadce9e92a0edd2b9229d13f1c7883402b880c2b7913534c73f4223074

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