Malicious PDF — malware analysis report

Static analysis result for SHA-256 a48fc2569e875b09…

MALICIOUS

PDF

98.7 KB Created: 2021-03-29 00:42:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e0d8645354c409044a3f14ad9d8dc74c SHA-1: 687e8bca4680fd317cbdc5d809f1d5af729f12b9 SHA-256: a48fc2569e875b09e0959c9d05a8a7ccb04bd503c0550578a4f14984fde03a83
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing lure designed to redirect users to malicious content.

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://jacksth.ru/strik?utm_term=why+did+the+nazis+use+bolt+action+rifles
    • https://cdn.sqhk.co/tosuwukiwate/bmUhcR2/retro_rpg_games_free_download_for_android.pdf
    • http://erethiztzj.space/99705350686s7k5z.pdf
    • https://static.s123-cdn-static.com/uploads/4481527/normal_5ff158b72b13b.pdf
    • https://cdn.sqhk.co/sulezudipozi/ahfjhVE/replika_romantic_partner_mod_apk.pdf
    • https://cdn.sqhk.co/fuvebopeweb/zgi3njb/day_r_premium_mod_apk_download.pdf
    • https://cdn-cms.f-static.net/uploads/4459058/normal_603d4ef1df2b9.pdf
    • http://raicen.com/27596756288ui88w.pdf
    • https://cdn.sqhk.co/xudapurofoz/hjgdXih/67984534775.pdf
    • https://cdn.sqhk.co/motanunika/JhhFZja/balloon_dog_drawing_tutorial.pdf
    • http://lilozekakotelup.sportsontheweb.net/bow_ties_for_men.pdf
    • http://parazepurafeza.medianewsonline.com/biodata_professional_format.pdf
    • http://itabody.space/ala_baburao_marathi_song_freerae2l.pdf
    • https://cdn-cms.f-static.net/uploads/4454822/normal_602f520cbc11d.pdf
    • https://cdn.sqhk.co/muribirigim/gCjcSp5/poly_artbook_free_poly_art_puzzle_games.pdf
    • http://teksalon.xyz/85360872509ppr7d.pdf
    • http://all-host.site/gutitefr3tmo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/52999f46-c8ac-4d8c-b047-b1efa7401262/69870910823.pdf
    • https://uploads.strikinglycdn.com/files/6387fe8d-9836-4e70-a92c-a74644e04c36/siriusxm_xez1h1_onyx_ez_satellite_radio_with_home_kit.pdf
    • https://uploads.strikinglycdn.com/files/100c3601-ad1d-4071-b77d-a068843712fb/cules_son_las_causas_que_provocan_el_insomnio.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013eb1.bin
296a79ac504371303bd1661f432e7b313caa23a63e8192109d5f83e86e51205f
pdf-font-stream PDF embedded font (sfnt) at offset 0x13EB1 5412 bytes
font_01_sfnt_off00015131.bin
808234577f00194686f56fa6707e97692bb6234639a7d51fd51df6e86b6ef5da
pdf-font-stream PDF embedded font (sfnt) at offset 0x15131 14092 bytes