Malicious PDF — malware analysis report

Static analysis result for SHA-256 21dada025464f3d8…

MALICIOUS

PDF

396.7 KB Created: 2021-03-14 09:57:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 52a6ee556d8d685f749dcc0aebc7d5a3 SHA-1: 7c310a203033f4912155228f839f4fab12a9d691 SHA-256: 21dada025464f3d8b17321e7d39031fef707a133bf578baf610927fe2defe4cb
156 Risk Score

Malware Insights

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

The PDF uses an SEO redirector with a lure for a 'digimon cyber sleuth digivolution guide pdf' to trick users into downloading it. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. While no scripts were directly extracted, the PDF structure and embedded URLs suggest it's designed to lead users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9033

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://botokaw.ru/wix?keyword=digimon+cyber+sleuth+digivolution+guide+pdf PDF link annotation
    • http://fabermanufacture.ru/90968710571zboy6.pdfIn PDF document text
    • http://sesizuxewewax.mygamesonline.org/fedex_locations_elkins_wv.pdfIn PDF document text
    • https://cdn.sqhk.co/bupabumo/iai8zlX/spqr_a_history_of_ancient_rome_book_review.pdfIn PDF document text
    • http://pivolirarorip.mypressonline.com/6453615672.pdfIn PDF document text
    • https://wuvobarapupi.weebly.com/uploads/1/3/0/8/130813490/wakipevameneze.pdfIn PDF document text
    • https://cdn.sqhk.co/tovipovo/hkgiPQm/zigzagoon_evolution_form.pdfIn PDF document text
    • http://goldotzyv.ru/why_would_my_kindle_not_turn_onhpyjm.pdfIn PDF document text
    • https://lepoxaxilil.weebly.com/uploads/1/3/4/4/134498836/2129355.pdfIn PDF document text
    • http://hookup757.fun/bsplayer_free_full_version_windows_7zjegu.pdfIn PDF document text
    • http://getbuiss.online/the_cambridge_history_of_warfare_geoffrey_parker6b59l.pdfIn PDF document text
    • http://leririv.sportsontheweb.net/how_to_charge_ion_tailgater_speaker.pdfIn PDF document text
    • https://suwuvonujijipi.weebly.com/uploads/1/3/4/0/134042364/bogabekuwir-rovifadus.pdfIn PDF document text
    • http://xoxuvajes.mywebcommunity.org/accounting_books_for_beginners.pdfIn PDF document text
    • https://woraragupawajup.weebly.com/uploads/1/3/2/6/132681931/daserazov.pdfIn PDF document text
    • http://salizurewaki.mypressonline.com/46574919266.pdfIn PDF document text
    • http://mjawebdesign.net/hermeneutics_principles_and_processes_of_biblical_interpretation1gu42.pdfIn PDF document text
    • http://jadogaxarabu.mygamesonline.org/72546434145.pdfIn PDF document text
    • https://mafaredoli.weebly.com/uploads/1/3/2/6/132695491/5305232.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xijejuvi.myartsonline.com/what_is_the_toughest_sql_query_optimization.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6c109e9-e595-4796-9ecc-acd5d449e790/48170459929.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/821c3e27-0c60-4691-a173-118e1f27888f/dijewetudivubizugaj.pdfIn PDF document text
    • http://ritumogadoj.onlinewebshop.net/64870549832.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5cb0c58b-845c-4261-8823-038b61315eb1/documentary_letter_of_credit_cost.pdfIn PDF document text
    • http://felugibesixe.onlinewebshop.net/damn_good_friends_quotes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/197c81e7-c974-4fff-8fef-0b1c98979ba5/ladojorapususa.pdfIn PDF document text
    • http://dipagepe.atwebpages.com/pevotowibopimofoxokezufuv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0c08d41-7768-4766-a290-f6df7c079e0f/cavaliere_island_range_hood_manual.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_009_off00052829.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52829 63240 bytes
SHA-256: ec30b96a9371631b8343cf61a45d150560251d2bc9b319431286943cce65ee5d
font_01_sfnt_off0005e457.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E457 5660 bytes
SHA-256: e85635c5a9d19f0a38fa24ec00c26950da4ad302d684d3918dab24b912173197
font_02_sfnt_off0005f77d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F77D 13240 bytes
SHA-256: 568398b83649030462b603d7e6c18a3b6fdd23a86cb167bdaecaf4b0db8c1e84