Malicious PDF — malware analysis report

Static analysis result for SHA-256 8502ad38e390ef6a…

MALICIOUS

PDF

155.2 KB Created: 2021-03-20 12:30:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7588886a4cacb445d8ed7971610c52f6 SHA-1: eb44a9a6b7d42c04ad76dd06257f861db92c06ba SHA-256: 8502ad38e390ef6a34043fd225baff72df40a29c1fe7d7e6d99266d0eda3bf13
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 suspicious domain, identified as malicious by ClamAV and ML classifiers. The PDF's structure and the presence of external URIs suggest it is designed to trick users into visiting a malicious website, likely for phishing or to download further malicious content. No scripts were extracted, but the PDF structure itself is indicative of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://maypoin.ru/award?keyword=aphrodite+story+pdf
    • http://vitrinachel.ru/paris_virtual_city_simulatorapu4o.pdf
    • https://cdn.sqhk.co/narobalof/gKgfI2m/movifivazibozuwa.pdf
    • http://fazejajogavu.medianewsonline.com/babexinapazeximomano.pdf
    • https://cdn.sqhk.co/balekunu/ha18BPb/leather_bomber_jacket_mens_black.pdf
    • http://shoplus.info/7004560336at958.pdf
    • https://cdn.sqhk.co/teketerep/Yicshcs/xopipovu.pdf
    • http://fakixigulidol.mywebcommunity.org/80355900718.pdf
    • http://afracheat9.xyz/malayalam_song_ambalamillathe_aaltharayil_vaazhum0y7nm.pdf
    • http://waystep.site/polygons_worksheetsns6jz.pdf
    • https://cdn.sqhk.co/fagaxirupunu/dtOgdhi/furilulozebatepitelubuj.pdf
    • http://khanapoorti.com/nacionalismo_vascofj0tt.pdf
    • http://maselawave.22web.org/atrial_fibrillation_treatment_guidelines_2015.pdf
    • https://cdn.sqhk.co/wifukatar/d9Bjagc/2020_uefa_champions_league_quiz_questions_and_answers.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://pumaxuno.epizy.com/11966214385.pdf
    • https://s3.amazonaws.com/divelatoxa/fender_passport_300_pro_portable_pa_system.pdf
    • http://mamisiz.rf.gd/bienestar_psicologico_tesis.pdf
    • http://jebowozuguvufot.rf.gd/plus_loan_master_promissory_note.pdf
    • https://s3.amazonaws.com/sikuva/fotubimovesizaxolanif.pdf
    • http://velefejaforafe.rf.gd/24776846728.pdf
    • https://s3.amazonaws.com/dugibabafod/boom_beach_39._73_apk.pdf
    • http://tixixumusugik.rf.gd/functionalist_theory_in_sociology.pdf
    • https://s3.amazonaws.com/rimejiguvif/platform_9_3_4_sign_svg.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_off00021452.bin
ca534cdaf5788ba8552206a4577dc198b2c1045a82173b9d4926050519c821a5
pdf-font-stream PDF embedded font (sfnt) at offset 0x21452 4976 bytes
font_01_sfnt_off00022543.bin
eaf9cf048ccd8d977ccc46fed46656216ab014634bfeb3fc78ca2c4df6d4945a
pdf-font-stream PDF embedded font (sfnt) at offset 0x22543 20492 bytes