Malicious PDF — malware analysis report

Static analysis result for SHA-256 d48d4d4422667529…

MALICIOUS

PDF

74.6 KB Created: 2021-04-08 04:52:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 1541e2d1b65ee18c70c1df3b125e5003 SHA-1: 3c8a6a61fa5eb65ade87f7127654abfaba3e48ed SHA-256: d48d4d44226675292bcbf4f5a9a8cd74428776ed28f7480a70147d61d0b2fc08
96 Risk Score

Malware Insights

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

The PDF document contains a URL that is flagged as malicious and is associated with phishing and trojan activity by ClamAV. The document body, though heavily obfuscated, suggests a troubleshooting context for a 'dyson', which is a common lure for phishing or malware delivery. The ML classifier also strongly indicates maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://mezovuduw.ru/strik?utm_term=why+my+dyson+won%2527t+work PDF link annotation
    • https://cdn.sqhk.co/lebereme/eqe6ghH/68611496732.pdfIn PDF document text
    • https://cdn.sqhk.co/givifevulo/arfMia6/dewopaxizojukoruxobaxelal.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/mokixetat/banegotufevadije.pdfIn PDF document text
    • https://s3.amazonaws.com/dowadotiju/sex_education_season_3_episode_1.pdfIn PDF document text
    • http://zilinovupiketom.epizy.com/sadof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6a4f6e9-8432-40df-b371-40939885e940/the_elegance_of_the_hedgehog_book_reviews.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cdc6e6d2-d992-4371-ae58-916cae838747/mutove.pdfIn PDF document text
    • http://dupumimegijema.epizy.com/37978587677.pdfIn PDF document text
    • https://s3.amazonaws.com/dorobukasawituw/navy_seal_buds_training_documentary.pdfIn PDF document text
    • https://s3.amazonaws.com/bagisi/50213217771.pdfIn PDF document text
    • https://s3.amazonaws.com/bepukuba/the_second_sex_summary_chapter_1.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad61590a-435b-4313-9de2-92281f3319f7/detroit_dd15_fuel_system_diagram.pdfIn PDF document text
    • https://s3.amazonaws.com/vobuturinivi/the_wind_in_the_willows_movie_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/pezofut/digestive_system_worksheet_ks3_tes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b42e12c-f8fe-4634-adbd-4aa59d9f0f44/80945398644.pdfIn PDF document text
    • http://satoposip.epizy.com/personal_statement_for_college_application_format.pdfIn PDF document text
    • https://s3.amazonaws.com/geradi/hard_sat_math_questions_practice.pdfIn PDF document text
    • https://s3.amazonaws.com/xotomisen/timabuwofa.pdfIn PDF document text
    • https://s3.amazonaws.com/wavunot/80205785127.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49615f65-0b01-47b4-9b57-0d5ea95ca4e2/matthew_hussey_text_him_first.pdfIn PDF document text
    • https://s3.amazonaws.com/tejuvonixag/media_player_classic_apk.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_off0000e604.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE604 5128 bytes
SHA-256: 73aa2d202dcf6d341868d6264e82c29e9577348970557c02c060d1275c73e3c6
font_01_sfnt_off0000f76b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF76B 11028 bytes
SHA-256: 3fd4eabb9aa6f1f72a5466836e471a369653d52db673938659b84ce8e9f11d08

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