Malicious PDF — malware analysis report

Static analysis result for SHA-256 08cfb09c969716d4…

MALICIOUS

PDF

79.3 KB Created: 2021-04-30 13:52:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: c3649cbf6bddd995453f63d4b088bf2d SHA-1: 3a8ee7f7251d67a621f23c37b2844ab57da263c3 SHA-256: 08cfb09c969716d40b02cf7f438b75988933e7dbb51e1bc04de50cdeb11d4844
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 0.9997

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://jacksth.ru/strik?utm_term=how+much+does+an+ipod+nano+cost PDF link annotation
    • http://gubokiwurajot.iblogger.org/catalogo_da_eudora_em.pdfIn PDF document text
    • http://xafesuvorolivig.scienceontheweb.net/how_to_pass_the_ca_dmv_vision_test.pdfIn PDF document text
    • http://tasiperop.medianewsonline.com/vavofe.pdfIn PDF document text
    • http://kopogaxepaku.sportsontheweb.net/baby_einstein_jumper_manual.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://168d2a81-f750-40c6-a653-3787650f980d.filesusr.com/ugd/3bcfef_dcf6c238fd714b0ba32f05fe9dce16fa.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/144e71e3-37a8-4322-b5a2-4ce6faa57464/walmart_relion_confirm_micro_meter.pdfIn PDF document text
    • http://melovawofijubab.epizy.com/vedoxewinoxirajovuwe.pdfIn PDF document text
    • http://soxenaroguz.rf.gd/68214088160.pdfIn PDF document text
    • https://5ac9d038-517d-4536-97f6-676423289421.filesusr.com/ugd/b444d4_e249ea39fc854261875500bbaa7639c2.pdf?index=trueIn PDF document text
    • http://kunaraxanoxun.epizy.com/rule_1000_bilge_pump_manual.pdfIn PDF document text
    • https://ccd4a2e6-63e2-4dcb-a02e-1ae1253dabcc.filesusr.com/ugd/059ff1_b940b29c171344568e24383ca9d1f79c.pdf?index=trueIn PDF document text
    • http://xosofidevutora.epizy.com/ganga_action_plan_in_bengali.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b26e724d-c737-4479-92ed-fbf68fb5ef3f/11272006875.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5e7a6a2-3d15-41d7-9e8e-2c8f59968fe1/neurologist_testing_for_adhd.pdfIn PDF document text
    • http://topufopotu.epizy.com/allama_iqbal_poetry_about_imam_hussain.pdfIn PDF document text
    • http://tativukowodugox.epizy.com/background_photo_frame_app.pdfIn PDF document text
    • https://21e323bd-7fdd-46e9-a6c7-4880e76d7610.filesusr.com/ugd/0a51c1_bba4e8c65193406e85e1e06f3f127bba.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/f40cb956-4231-43b7-97db-8c3a8f8711dc/what_is_the_main_function_of_the_north_atlantic_treaty_organization.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8fd76db-a42d-4e23-9120-1b9a8969b743/porugovotam.pdfIn PDF document text
    • https://9526c93a-d340-4dca-b5fd-2864ff0888c4.filesusr.com/ugd/4c3d6a_c2ccfba15f7349abb8bc08aa93eaf469.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0ba6f26-b19a-470e-9522-2bbc0e3b6e87/which_cards_against_humanity_expansion_box_is_the_best.pdfIn PDF document text
    • http://bodagoge.epizy.com/ratawuvunivazaf.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_off0000f98e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF98E 5240 bytes
SHA-256: 8dab68fddaa56d472c0b1aa8d18248e5274e8adaa2b5cf428d7040f4cd86c8e6
font_01_sfnt_off00010b4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B4B 10768 bytes
SHA-256: ce865dc48f129fe2b33039dc958f597124ca4df4001bbcc0d6bc181ff3842505

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