Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b35b2f498805055…

MALICIOUS

PDF

75.7 KB Created: 2021-04-06 17:02:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d2190bc7b1bcacdbb812efb7e2c31d98 SHA-1: d18c7123da2034c59d4aa5f7b836782de2446144 SHA-256: 4b35b2f4988050554dd39ddf16f90356a41cd379f303884a3f88a30b9935fe32
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing or trojan. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to deliver a malicious payload or phish for information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://zajinet.ru/wix?keyword=minecraft+perler+beads
    • https://cdn.sqhk.co/noviraxat/XQjjKhe/u_box_tv_amazon.pdf
    • https://cdn.sqhk.co/kibutonap/gjgXjdO/classroom_of_the_elite_season_2_light_novel.pdf
    • https://xamelanaf.weebly.com/uploads/1/3/5/3/135331914/dosetil-jegofud-xajoj-vorejonisuvenod.pdf
    • https://cdn.sqhk.co/parikozug/GihVjbb/josinodulu.pdf
    • https://cdn.sqhk.co/belesobikezi/jcghihL/xatanewosesavuginuk.pdf
    • https://radumudoxelis.weebly.com/uploads/1/3/4/2/134235428/newididawuko_lewukavironoros.pdf
    • https://xopozutafedas.weebly.com/uploads/1/3/1/4/131453480/791863.pdf
    • http://apeech.ru/how_to_charge_ravpower_pd_pioneer3pw4r.pdf
    • http://milansit.space/pachinko_fever_problems66brj.pdf
    • https://waronovubuwige.weebly.com/uploads/1/3/4/6/134631102/42c09.pdf
    • https://ginufadep.weebly.com/uploads/1/3/4/6/134668932/e6a22.pdf
    • https://ziwugedaxuz.weebly.com/uploads/1/3/4/5/134501511/3208748.pdf
    • https://levunabul.weebly.com/uploads/1/3/1/4/131407164/bunifeza.pdf
    • https://mebolosedam.weebly.com/uploads/1/3/6/0/136009811/gabex.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/0a3267d4-21e1-4465-a20c-e25a1268fe33/grade_10_biology_textbook_download.pdf
    • http://gujodupilewibo.epizy.com/88589796424.pdf
    • http://xawoforusur.epizy.com/asthma_wikipedia.pdf
    • http://sulezunabifop.epizy.com/how_to_design_a_website_with_wordpress_for_beginners.pdf
    • https://uploads.strikinglycdn.com/files/cb3f5b56-e502-446f-a840-10ae047c390e/netbeans_javafx_tutorial.pdf
    • http://jegozejixal.epizy.com/phonetics_practice_exercises.pdf
    • http://jilutuve.rf.gd/item_shop_pro_game_guides.pdf
    • https://uploads.strikinglycdn.com/files/250522b0-31ad-4e16-a0ce-b7a20911ad31/49617460595.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_off0000e8ff.bin
e0e4e5aa53a73efd1fef3311268da6ff6785bab27c42442d5498771f68803be1
pdf-font-stream PDF embedded font (sfnt) at offset 0xE8FF 5292 bytes
font_01_sfnt_off0000fb12.bin
02522dcd6d79b4202d5a684c643b5e68e3980148a4a536bf24d536e6af3431f2
pdf-font-stream PDF embedded font (sfnt) at offset 0xFB12 10832 bytes