Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cbdd8c619baedc1…

MALICIOUS

PDF

72.9 KB Created: 2021-04-27 13:40:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 1b76e8f077f4d72f9ccb4459874d1ffe SHA-1: 71b3c4e7bf70292ade4eb698e6675b226faf098d SHA-256: 0cbdd8c619baedc1fb8bb2477e93f6a14d8d638b1a3a62296e78ee26fa8ec4d2
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 0.9991

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://jumiwimov.ru/strik?utm_term=adt+security+system+models PDF link annotation
    • http://xewaxoweva.22web.org/rutas_senderismo_sierra_de_aracena.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421350/normal_606a16ead84eb.pdfIn PDF document text
    • http://design-kvartira.info/peterbilt_service_netc8rwz.pdfIn PDF document text
    • https://cdn.sqhk.co/pomijatan/ijjgifs/how_to_draw_halloween_pictures_pumpkin.pdfIn PDF document text
    • https://cdn.sqhk.co/tinulafi/hIXjghf/97142668129.pdfIn PDF document text
    • http://cancandance.org/jcpenney_sewing_machine_model_7050_partssl7wu.pdfIn PDF document text
    • http://mutedagagagexe.22web.org/anemia_ferropriva_fisiopatologia.pdfIn PDF document text
    • http://kino-vezde.ru/swing_trading_options_coursetfva0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383334/normal_60140dea750fb.pdfIn PDF document text
    • https://cdn.sqhk.co/suxujaba/dkXBbib/dinosaur_fossils_iphone_wallpaper.pdfIn PDF document text
    • https://cdn.sqhk.co/pijajawopoji/cjgiiv3/root_activity_launcher_pro_apk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459328/normal_5fe3961251088.pdfIn PDF document text
    • https://cdn.sqhk.co/lilaxikixo/CijsVdm/knights_of_labor_definition_apush.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381340/normal_5fcbabc060647.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411220/normal_5fe2bfdf64cd3.pdfIn PDF document text
    • http://testvvd.xyz/how_to_use_the_kitchenaid_food_processor15sx0.pdfIn PDF document text
    • https://cdn.sqhk.co/puxedimuwo/8Sjjwmt/georgia_senate_election_results_2016.pdfIn PDF document text
    • http://raisinsapp.pro/7824665404uooy.pdfIn PDF document text
    • https://cdn.sqhk.co/fatidizeru/fHigJCj/rainbow_stacker_toy_kmart.pdfIn PDF document text
    • http://japadalifu.22web.org/blackshot_for_macbook.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://begulazelukej.rf.gd/chick_fil_a_catering_menu_prices.pdfIn PDF document text
    • https://s3.amazonaws.com/zifozujiwi/adchoices_facebook_android.pdfIn PDF document text
    • https://s3.amazonaws.com/zumezeviwakiz/resarakava.pdfIn PDF document text
    • http://rubonemim.epizy.com/which_is_better_deep_learning_or_machine_learning.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_off0000e1d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1D4 4964 bytes
SHA-256: f0f185366f0614ac4e43c55c217302326eb21d7c9f607e0ac5a988b8e3101454
font_01_sfnt_off0000f2ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2AD 10412 bytes
SHA-256: 5621d47e9f4346f5247b35241c1aff4bc2b65aad95805c046096fc578af33d82

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