Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2fea63ca27dc735…

MALICIOUS

PDF

73.9 KB Created: 2021-03-06 14:00:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 45ab46040339289ed0944b8960cca16d SHA-1: 5a3957765cd0b7fb4f4858f1d00f040618afe153 SHA-256: a2fea63ca27dc735dddc662a085881ddfb4695ccc389b5d4fc6e1ee426766354
134 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

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 and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://leonvi.ru/strik?utm_term=us+military+dog+training+manual PDF link annotation
    • http://bestsaleshopin.xyz/liquidos_y_electrolitos_en_cirugiarc58g.pdfIn PDF document text
    • http://onlineeshop24.xyz/windows_10_shortcut_to_move_window_to_other_screeny4vj8.pdfIn PDF document text
    • http://mitimewigupito.mypressonline.com/56391595512.pdfIn PDF document text
    • http://lomidal.mygamesonline.org/emergent_strategy_definition_marketing.pdfIn PDF document text
    • http://fastdonwload.space/assistir_eu_declaro_marido_e_larryc0h90.pdfIn PDF document text
    • http://dovulup.iblogger.org/56262237687.pdfIn PDF document text
    • http://leseweremizew.scienceontheweb.net/will_there_be_a_sequel_series_to_star_wars_rebels.pdfIn PDF document text
    • http://xomutukegadoj.mypressonline.com/41210891321.pdfIn PDF document text
    • http://onlinesos.tech/52296656576hpwao.pdfIn PDF document text
    • http://jsexj.fun/crown_the_empire_the_fallout_deluxe_reissue_rar2fbhy.pdfIn PDF document text
    • http://lewuvumo.sportsontheweb.net/what_is_the_8_point_story_arc.pdfIn PDF document text
    • http://nunovoxiwanafuz.getenjoyment.net/why_we_cant_wait_martin_luther_king_book.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/94c150f3-6f05-409e-bd54-2a18763a81a0/41615689561.pdfIn PDF document text
    • http://zegudonokor.epizy.com/warangal_tunes_songs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b4978a9-b22e-4f52-9576-9cf6a25adc4e/infinix_note_7_price_in_pakistan_2020_4gb_ram_64gb_rom.pdfIn PDF document text
    • https://s3.amazonaws.com/jamuluvuvava/vocabulary_workshop_level_a_answers_unit_4.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44962839-59d8-4b5c-90e6-a3fee12de41c/frigidaire_washer_dryer_combo_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/lulelepese/sozafunutijadegaso.pdfIn PDF document text
    • http://faleferesevo.onlinewebshop.net/60057928033.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_off0000e3ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3CA 5240 bytes
SHA-256: 167413cc3cd299a3ab9cd14fa7804bc14c4e58990965282feed22ae04ea51b5a
font_01_sfnt_off0000f589.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF589 10804 bytes
SHA-256: f7ba44698a463b00f9512a693272bce821ccd8c2b6a2907be9cb5f88917ab286

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