Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a0df062aa4eb701…

MALICIOUS

PDF

92.6 KB Created: 2021-03-01 05:12:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 2e2baeefe894417c9526256d16c95bc0 SHA-1: 2f274edc4b4c2620d3ec25a965714984b7adf0d6 SHA-256: 4a0df062aa4eb7011e8a7a78c895ba841fbecc30e81478b21e3f9161a4ed9a92
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-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://nipisod.ru/strik?utm_term=android+app+development+course+in+coimbatore PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4480408/normal_5fff14fa92348.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368221/normal_602d4a5ca6b2b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475866/normal_5fe394110e63d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368237/normal_600a954ac4e42.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390660/normal_5ffa8c028e2a8.pdfIn PDF document text
    • http://subeziti.22web.org/skyrim_special_edition_load_order_guide.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410703/normal_6036d2ce7c732.pdfIn PDF document text
    • http://mobufuwiwid.medianewsonline.com/ronugemopagozitim.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380392/normal_5fdc018b05a1b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4499351/normal_6001c4477d90f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419225/normal_600c0c94134b9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501042/normal_6008bfd6362b1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477173/normal_602725a9bb16c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462688/normal_5fe314ff1fa1d.pdfIn PDF document text
    • http://nupesupo.mypressonline.com/free_greek_hebrew_bible_translation.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dumizalu.epizy.com/chrome_helper_software.pdfIn PDF document text
    • https://s3.amazonaws.com/sazariwapa/26251452390.pdfIn PDF document text
    • https://s3.amazonaws.com/mawesenasijoser/video_maker_app_play_store.pdfIn PDF document text
    • https://s3.amazonaws.com/dafumuxitupav/kuchizuke_diamond_piano_sheet_easy.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_off00012e46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E46 5408 bytes
SHA-256: eed430e867c04f93f56638b870b57418fcb880732d68c4186f22dc42cbab0960
font_01_sfnt_off00014091.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14091 10628 bytes
SHA-256: d59cb5edb952b9e1385212d4c5fa892f9d609e56566f57ee6c7ca94edd35fc68

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