Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b430bf6875a2251…

MALICIOUS

PDF

205.4 KB Created: 2021-03-15 12:31:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 3623daeb3a4af97d7dad1c1abaf26258 SHA-1: 65600b92cb6f1a892d5cbbd18bb4955ececa8b47 SHA-256: 1b430bf6875a2251de658a9a0da2dee1748baf91a3dc79709d10797021f4b0d5
136 Risk Score

Malware Insights

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

The sample is a PDF document flagged by ML classifiers and ClamAV as malicious. It contains heuristics indicating a payment redirection lure, suggesting a business email compromise attack. While no scripts were directly extracted, the presence of embedded URLs points to potential redirection to malicious sites for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9938

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
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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://bologen.ru/wix?keyword=pulling+down+strongholds+kjv PDF link annotation
    • http://rivuxini.66ghz.com/pokemon_go_gengar_solo_raid_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/xazururoxe/YiggjlE/78156178871.pdfIn PDF document text
    • https://cdn.sqhk.co/tororukiwuri/injhB8d/polytone_mini_brute_ii.pdfIn PDF document text
    • https://cdn.sqhk.co/ribobujir/H9jhzhe/wimubikofeberavidugajej.pdfIn PDF document text
    • https://cdn.sqhk.co/vukupamita/ijXigpT/nugujilipos.pdfIn PDF document text
    • https://cdn.sqhk.co/ratosakip/dhggWND/gamestart_pixel_battle.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/sajatesawodiji/latest_guidelines_of_diabetes_mellitus.pdfIn PDF document text
    • https://s3.amazonaws.com/zoxewudunigus/49082952934.pdfIn PDF document text
    • https://s3.amazonaws.com/fixararololu/remington_700_sps_tactical_detachable_magazine.pdfIn PDF document text
    • https://s3.amazonaws.com/juzewojavomofew/oracle_msca_developer_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/zopenave/17831852301.pdfIn PDF document text
    • https://s3.amazonaws.com/suzixegazunow/happy_birthday_images_for_niece_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b85b9e85-cc32-49aa-bce9-daacca800dc4/lezulojedisunofuxa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bfbd46e9-c5fb-4056-98a7-024d95855698/93091144811.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4d41cc7-989c-4e09-898e-4ffa229f47d1/mepatewelikafupit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aeab6bfe-b77b-4122-a644-762b659c8971/tekunipurefoxuvine.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6844db7f-16e2-4dc2-962d-a8f2b3ee0c88/walmart_canada_photo_blanket_promo_code.pdfIn PDF document text
    • https://s3.amazonaws.com/metubevozisul/8229882930.pdfIn PDF document text
    • https://s3.amazonaws.com/nitatotol/graphic_design_courses_in_mumbai_at_dadar_west.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/56b785d5-2884-4762-9dc4-6eef1fe43355/duwuwidasopopixodawof.pdfIn PDF document text
    • http://dexileju.rf.gd/maze_runner_death_cure_book_synopsis.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_off0002d507.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D507 5172 bytes
SHA-256: 38e6688e0671f5115fb35750d55bd10d0ed7ea90bf427059d87e267af7a9a427
font_01_sfnt_off0002e6b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E6B8 27532 bytes
SHA-256: e4219eb42143ba3c9206ebf96bfd7d42b423f1b642ac81ddff6594089320f812

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