Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab25abfa0270b1b2…

MALICIOUS

PDF

73.8 KB Created: 2021-03-24 22:49:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: ab24083b122ccb804f04090f8bea1627 SHA-1: d18493b794b48b02f2d05948b8e2fa965638ebbf SHA-256: ab25abfa0270b1b2b82e08d8317cf0019d876c6aedb5a3d8e2bab32e979ced2d
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically identified as 'Pdf.Phishing.Trojan'. The document body and heuristics indicate a lure related to 'cpcs training manual for criminal defense' which redirects to a suspicious URL. This suggests a phishing attack aiming to deceive users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://dugedepap.ru/wix?keyword=cpcs+training+manual+for+criminal+defense PDF link annotation
    • https://cdn.sqhk.co/fopeziriga/BHiaL89/swot_analysis_examples_for_employees.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420454/normal_600816a84059b.pdfIn PDF document text
    • http://cafe-cok.ru/apc_br1000g_back_ups_pro_1000_replacement_batteryxm8io.pdfIn PDF document text
    • https://cdn.sqhk.co/gazamara/iLJAcaB/bollywood_murder_mystery_movies_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/worijekegir/hdDjgih/vikin.pdfIn PDF document text
    • https://cdn.sqhk.co/zovaratigu/Lhfheif/social_deal_wereld_genieten_leiderdorp.pdfIn PDF document text
    • https://cdn.sqhk.co/jefadata/gZgdVdr/fifa_beach_soccer_world_cup_2017_winner.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479446/normal_6044d5c1897ff.pdfIn PDF document text
    • https://cdn.sqhk.co/nalawanuxa/jaggje8/99524144897.pdfIn PDF document text
    • https://cdn.sqhk.co/zimopaji/ericjgV/xitoravujumisikoz.pdfIn PDF document text
    • https://cdn.sqhk.co/pofaxexaxi/ihQ9dMm/3234874964.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382190/normal_5fc7932239848.pdfIn PDF document text
    • https://cdn.sqhk.co/xanovika/Ny5jaeh/tifemaruvukumekomawosa.pdfIn PDF document text
    • http://wegansit.space/lowerizajadutezie7pt.pdfIn PDF document text
    • http://item-mask.top/how_to_know_motherboard_model_win_103131p.pdfIn PDF document text
    • https://cdn.sqhk.co/mebosuxular/ha9wwjg/kakuro_puzzle_books.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385413/normal_5ff1302e16205.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367912/normal_6002ae6715d09.pdfIn PDF document text
    • http://profaudit32.ru/zoxiposisakuj5kzg.pdfIn PDF document text
    • https://cdn.sqhk.co/wazilisiko/hhjaMic/98724986773.pdfIn PDF document text
    • https://cdn.sqhk.co/pabefidinaz/5ic8Ze7/cake_pop_recipe_easy_box_mix.pdfIn PDF document text
    • https://cdn.sqhk.co/lewiwifo/idmibAl/rfid_tag_finder_apk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e09a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE09A 5380 bytes
SHA-256: be6fc5f48fb78ef8c65f5b2298a039b4330aba35d226af223d1ea704d2bde1b3
font_01_sfnt_off0000f2ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2CA 11380 bytes
SHA-256: cd53c8f4aaf01cdb2bdc4c3f4d844c9f32730bb1faca1653165a0f52f472c9e4

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