Malicious PDF — malware analysis report

Static analysis result for SHA-256 a48e0898478548f8…

MALICIOUS

PDF

86.7 KB Created: 2021-03-19 12:58:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: a4384af3f8dab15d2c5097857d2ea17d SHA-1: 5da68b72a52e67d8b6276fcfe6940b9f20cab255 SHA-256: a48e0898478548f8548d631e500f2bce9d759b63fa9a9f90e5d1778c6f4b4b20
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 0.9993

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://bologen.ru/strik?utm_term=ejercicios+gramatica+ingles+b1+online PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4445558/normal_5feccba9d22f0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381095/normal_60174e980574f.pdfIn PDF document text
    • http://universe1.space/13225376029y1rm5.pdfIn PDF document text
    • http://daliadiago.com/5506481206v5i3u.pdfIn PDF document text
    • http://mastericy-chistoty.ru/the_eye_of_the_storm_chordsqyzpl.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408336/normal_5fcd6c66c388b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459784/normal_5fe4ddb130666.pdfIn PDF document text
    • http://iciko.xyz/the_secret_life_of_the_american_teenager_cast_season_4940sh.pdfIn PDF document text
    • http://fullpisetc.ru/what_is_the_book_of_the_courtier_about58bjp.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485153/normal_5fef9d0ecf8f1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378857/normal_60388638ed4d5.pdfIn PDF document text
    • http://agent-ritual495.online/how_to_clean_wolf_toaster_oven75wg1.pdfIn PDF document text
    • http://flowerport.shop/xogilosuzilr6d51.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410975/normal_600676489ae8b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/sazariwapa/30201936354.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7cd8abe0-7289-4b33-bb17-df20150c6da0/que_significa_el_titulo_como_agua_para_chocolate.pdfIn PDF document text
    • https://s3.amazonaws.com/zafibimutadoti/16th_century_english_peasant_clothing.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bef62114-46c5-45b0-bb81-a6106fbcc47b/stihl_bg55_parts_amazon.pdfIn PDF document text
    • https://s3.amazonaws.com/xomudufe/are_ryobi_attachments_interchangeable.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/79e3d469-8399-4483-ac7e-953719757a64/33225970787.pdfIn PDF document text
    • https://s3.amazonaws.com/wexukufedepim/gofarizigukeketunop.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ef8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF8B 5132 bytes
SHA-256: f298c66442e5553a541374a35c4a227deedd589b454ca89405eefa3d759217d6
font_01_sfnt_off000100ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100EC 12236 bytes
SHA-256: 8d49480d45ff5c161509346a2e7bd93eff3bd999cf2c863591daa0d9d2fba1d0
font_02_sfnt_off00012802.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12802 16204 bytes
SHA-256: e93acd332f5893643511f4cefd38969ad5c744ad1b08842a788b6be7d277dd15
font_03_sfnt_off00013d30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D30 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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