Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ae2141d85ddf1ba…

MALICIOUS

PDF

102.2 KB Created: 2021-03-18 07:31:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1d1d83b2cc3d49d499d31e3359464b8f SHA-1: 73e4edf8207908141e267859e6ab40f643812d82 SHA-256: 3ae2141d85ddf1ba63f40c1bbb237c0bb86b00986cce49ce9aa2ab16df410855
96 Risk Score

Malware Insights

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

The file is a PDF that contains an embedded URI pointing to a lure related to an Arduino Uno R3 manual. The ML classifier and ClamAV detection strongly indicate maliciousness, likely for phishing or malware distribution. The presence of multiple external URLs suggests a campaign 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://vilenefex.ru/wix?keyword=arduino+uno+r3+manual
    • https://cdn.sqhk.co/jipuxoxukul/L8ihcCp/trastorno_alimentario.pdf
    • http://verification-help.com/25374738241nxuca.pdf
    • http://nonoxutiwi.mypressonline.com/pakawozexegifitifufabu.pdf
    • https://cdn-cms.f-static.net/uploads/4452199/normal_6029cbb560e73.pdf
    • http://irisca.online/40632614670vuoqy.pdf
    • https://cdn-cms.f-static.net/uploads/4461791/normal_600f404b37bc0.pdf
    • https://cdn.sqhk.co/filumabit/gcY7iaq/28152611371.pdf
    • https://cdn.sqhk.co/vitimosugu/jhMhfww/permutations_combinations_and_probability_worksheet.pdf
    • http://josibazuveloj.iblogger.org/51021281515.pdf
    • https://cdn.sqhk.co/dumotometapo/ijayhg7/47878237759.pdf
    • https://static.s123-cdn-static.com/uploads/4424331/normal_5ff96fedc3c9c.pdf
    • https://cdn.sqhk.co/rarukaboz/diaxja7/small_animal_radiography.pdf
    • https://cdn.sqhk.co/xexanodu/rTxjgYZ/2928139275.pdf
    • http://about-central.com/50200817788pxzg2.pdf
    • https://cdn.sqhk.co/nivabetaz/KTwqOji/retroarch_roms_pack_android.pdf
    • https://cdn.sqhk.co/xorazasuno/Mdhd5jd/sniper_gun_war_mod_apk.pdf
    • http://xufededubumavif.scienceontheweb.net/digital_fortress_audiobook_free_download.pdf
    • https://cdn.sqhk.co/xumesapaxoku/hhha3gg/arrow_truck_sales_warranty_reviews.pdf
    • https://static.s123-cdn-static.com/uploads/4411681/normal_5fffbdafafbde.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://gijafusatuvaxoj.rf.gd/call_of_duty_4_pc_gratis.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001459f.bin
5aa3235bf63784d576b375b942b23049b972914335851483c0a942ccea9753e3
pdf-font-stream PDF embedded font (sfnt) at offset 0x1459F 4948 bytes
font_01_sfnt_off00015653.bin
b17c878e4389bc37131d23314004e051637468a2b9b6171fd873bbdc24766b0c
pdf-font-stream PDF embedded font (sfnt) at offset 0x15653 2884 bytes
font_02_sfnt_off0001625d.bin
3d36b5593089d1b75c47c16684805215be86d1a1956ba126a3af102ac0e035db
pdf-font-stream PDF embedded font (sfnt) at offset 0x1625D 12432 bytes