Malicious PDF — malware analysis report

Static analysis result for SHA-256 ecf33e9269c89621…

MALICIOUS

PDF

76.6 KB Created: 2021-03-04 00:09:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: de5dcd2a37e723947cd8646f304ba44d SHA-1: 93791da00732783d203f6b03732df2208e0409fc SHA-256: ecf33e9269c89621db7a0557eca8dac4136ad27d19087d846bdd2fa798bbeb82
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 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://dugedepap.ru/123?utm_term=d%2526d+5e+dm+guide+anyflip PDF link annotation
    • https://cdn.sqhk.co/lexijunibul/cGALxja/81172153901.pdfIn PDF document text
    • https://cdn.sqhk.co/fatidizeru/siaUjc9/metaphysics_aristotle_amazon.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388824/normal_602290e4d3b81.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383918/normal_60062e79d8df5.pdfIn PDF document text
    • https://cdn.sqhk.co/sexasegavon/bji8eSK/blocky_car_racer_download_game.pdfIn PDF document text
    • https://cdn.sqhk.co/jidelugob/gc7ZHjd/gunshot_wound_hand_icd_10.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478148/normal_602b439bc3b16.pdfIn PDF document text
    • https://cdn.sqhk.co/ronofumito/rKEhjdb/aesthetic_background_laptop_hd.pdfIn PDF document text
    • https://cdn.sqhk.co/zidodovare/g1heNsa/fake_gps_location_iphone_without_jailbreak_ios_13.pdfIn PDF document text
    • http://muziwavesos.iblogger.org/calcium_metabolism_in_dentistry.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365635/normal_5ff42a68738ba.pdfIn PDF document text
    • https://cdn.sqhk.co/kulobibab/cFiVibm/dafuselazovekapejo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468814/normal_6007efafa078f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418180/normal_5fd0357c38e6c.pdfIn PDF document text
    • https://cdn.sqhk.co/mawejoxejobe/bNvcijg/wefapomajegimov.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/nisiwanolom/86321390709.pdfIn PDF document text
    • http://viwesusogura.rf.gd/davinalamiwurujexidunune.pdfIn PDF document text
    • http://fekerudosepu.rf.gd/trends_in_the_periodic_table_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/xapidajovaji/mugovamagebunemovusemuzi.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_off0000f3aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3AA 4156 bytes
SHA-256: 7b9a78bc71d00e4bcff8473d51fc82c270a18144a13d22e5cfd906eda86eaada
font_01_sfnt_off000101d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101D8 10476 bytes
SHA-256: e698baa478c98771f1dbb3978e897a08b830b9a7902e4cb08295e349643fa750

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