Malicious PDF — malware analysis report

Static analysis result for SHA-256 a884293f779aa314…

MALICIOUS

PDF

73.7 KB Created: 2021-03-10 18:37:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 20cf3fdb267e74d9b034ed857c3dea06 SHA-1: b2d7a8e6bcee63960ab4cc7d1b57fa678dae742e SHA-256: a884293f779aa3141d3718850bd9740343efbf0e32b8239a7055ebe8b7b4dbe5
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that leads to a domain associated with phishing and malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The document's content, though partially obfuscated, suggests a lure related to 'Asperger vs autismo pdf' to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://resalured.ru/award?keyword=asperger+vs+autismo+pdf PDF link annotation
    • https://cdn.sqhk.co/wobuwozavenu/ricjcTY/crossfire_car_convertible.pdfIn PDF document text
    • https://cdn.sqhk.co/ruwonumatag/ijkyOsP/shattered_glass_movie_review.pdfIn PDF document text
    • https://cdn.sqhk.co/rawatajizefu/jeJifia/24478733005.pdfIn PDF document text
    • https://cdn.sqhk.co/rowojazur/ihmiaia/37271376001.pdfIn PDF document text
    • http://tosety.xyz/hp_designjet_5000_printery4naj.pdfIn PDF document text
    • http://trellos.fun/epub_in_kindle_format_umwandeln_onlinen2wh5.pdfIn PDF document text
    • https://cdn.sqhk.co/zasemewiti/zwb6jfd/53382304005.pdfIn PDF document text
    • http://moscowflowers.shop/wizedanasebasarovirebobi5j9r.pdfIn PDF document text
    • https://cdn.sqhk.co/tatidukigag/fCxnhg6/battle_sound_effects.pdfIn PDF document text
    • https://cdn.sqhk.co/vemegunir/7jdQhjb/wisuluromif.pdfIn PDF document text
    • https://cdn.sqhk.co/zedujunuwuxe/dthejjK/binary_logistic_regression_interpretation_of_results.pdfIn PDF document text
    • https://cdn.sqhk.co/saturarad/eZnUjdf/sedozifudagadej.pdfIn PDF document text
    • http://bcpzonasegura10beta-viabcp.com/1414007276765tw6.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/sefepugolupalax/osrs_chinning_guide_not_ape_atoll.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1caab45d-2051-4f13-ab79-e77eabe48457/to_kill_a_mockingbird_movie_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/vuzotisenixava/jupavupofusekatakumojupe.pdfIn PDF document text
    • https://s3.amazonaws.com/tugafebip/deseboxet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b64a086-6c95-43ee-86af-0c5997ee9415/samsung_galaxy_s9_price_in_pakistan_4_64.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_off0000e524.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE524 5376 bytes
SHA-256: bb3e9cc8ac73774b2bc5a53077f33541578632d1acc63591eeb21c4da4204a75
font_01_sfnt_off0000f761.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF761 9936 bytes
SHA-256: c696066cfd2e62aa007ed3b844d58170b1b640f6c5594ac9766674bcb8e30f90

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