Malicious PDF — malware analysis report

Static analysis result for SHA-256 54f386b7eb95c85e…

MALICIOUS

PDF

74.2 KB Created: 2021-05-13 21:15:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: b673d68b83e9ff4e02f0cc20e536e384 SHA-1: 99e6f133d924d1e20f09bcc72de2c36fd651afd5 SHA-256: 54f386b7eb95c85e97b513f043a7502430c9aa45cc6fb4459d548cf96987f5c3
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://xajibur.ru/strik?utm_term=what+exercise+burns+the+most+belly+fat+the+fastest PDF link annotation
    • https://cdn.sqhk.co/gomuwumetixu/UpT1adN/63499101687.pdfIn PDF document text
    • https://cdn.sqhk.co/bagudivibi/RieijhS/ielts_practice_test_6_reading_answers.pdfIn PDF document text
    • https://cdn.sqhk.co/finulepaf/gcDEheI/happy_wheels_download_pc_for_free.pdfIn PDF document text
    • https://cdn.sqhk.co/mevazasid/hfJShjz/iheartradio_apple_watch_cellular.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://d2d87fd5-5f4d-49aa-ab3c-2263ce4b5d22.filesusr.com/ugd/9169d2_c9d8acf85e5240d6835330888a1d1dff.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/dfa2d9c6-6783-49f1-85db-1b5845538e79/tudimim.pdfIn PDF document text
    • https://288c7b4b-0494-48f6-8ee2-9dd519b96b0a.filesusr.com/ugd/a107db_ed5320745315479ea812cd6a8a22fbd3.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/72c3a74c-3d10-4e9b-8dc0-fa76ff81c3c4/maytag_centennial_washer_parts.pdfIn PDF document text
    • https://s3.amazonaws.com/busutafitufe/86349697230.pdfIn PDF document text
    • https://s3.amazonaws.com/muvojugejoxip/kunukaluluvoj.pdfIn PDF document text
    • https://s3.amazonaws.com/setigafat/kidney_structure_and_function_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f5ebe64f-33ea-4b40-946d-2c51e2ab0539/85022554360.pdfIn PDF document text
    • https://s3.amazonaws.com/ditiruz/easy_scottish_fiddle_tunes_sheet_music.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af77cc58-6c69-4352-8a76-07abc01d50fd/taco_bell_healthy_menu_items.pdfIn PDF document text
    • https://e028ba52-6c86-493e-86b7-fecf7cd1c3eb.filesusr.com/ugd/bcb9fd_0a25c714d9ab4d69b68af6ed5d4952c6.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/satedafadusizo/jenonalego.pdfIn PDF document text
    • https://8533cbf3-c0d6-400c-bdf8-8ca38cf0242b.filesusr.com/ugd/135178_7b43ee7b71f143d281b319729628a309.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/c43e93b3-7174-4ca5-b803-7df593b69bcd/top_200_drugs_pharmacy_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/96128754-5a84-4a67-8f02-7c14d78e6ea2/does_papa_johns_make_a_thin_crust_pizza.pdfIn PDF document text
    • https://s3.amazonaws.com/vavale/ambler_primary_school_uniform.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/edd577d1-172b-4a41-b617-ecac93ded1ed/zamepomu.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_off0000e61e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE61E 5444 bytes
SHA-256: 27a14d54f7424a7d1af4dc44eaf43489c3a1c8ecaf325fbdc4af41059ecce667
font_01_sfnt_off0000f891.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF891 10212 bytes
SHA-256: 6593b3a67440a6622457aec2a056d72d4ccc188423dff82a68c8dbd11815947e

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