Malicious PDF — malware analysis report

Static analysis result for SHA-256 1475b6bab3d73371…

MALICIOUS

PDF

73.2 KB Created: 2021-03-15 18:18:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 07f5da5a426c09bf30a4a46aae633d5e SHA-1: 693babdc833c4a791a6adf8e93be466a0c18fa4f SHA-256: 1475b6bab3d7337172aeb18ebe8f8fe34aeb4608b0951cbe188044fa98bd4fcd
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, specifically identified as 'Pdf.Phishing.Trojan'. It contains an embedded URL pointing to a download for an 'audio editor apk mod', suggesting a phishing or malware distribution lure. While no scripts were directly extracted, the presence of external URIs and the nature of the detection indicate a malicious intent to trick users into downloading potentially harmful software.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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/123?utm_term=audio+editor+apk+mod
    • https://static.s123-cdn-static.com/uploads/4417834/normal_600534001d22e.pdf
    • https://static.s123-cdn-static.com/uploads/4393514/normal_5ff7f1f830466.pdf
    • https://static.s123-cdn-static.com/uploads/4380213/normal_5feb89b385e76.pdf
    • http://vedevedonumizak.iblogger.org/60230576075.pdf
    • https://cdn.sqhk.co/geradaxezum/ehfcGig/phoenix_suns_players_instagram_model.pdf
    • https://static.s123-cdn-static.com/uploads/4367296/normal_5fff2e0427e21.pdf
    • https://cdn.sqhk.co/tekuligote/fMgi5gd/unicorn_fake_video_call_game.pdf
    • https://static.s123-cdn-static.com/uploads/4458132/normal_6008d878cbda5.pdf
    • https://cdn-cms.f-static.net/uploads/4368763/normal_5fe75bc6daeec.pdf
    • http://jujovobima.getenjoyment.net/ivan_stodola_baova_ena.pdf
    • http://pemufosapakem.mypressonline.com/33594095312.pdf
    • https://cdn.sqhk.co/jisofoxabap/Wihibja/alight_motion_pro_apk_2._6.pdf
    • https://static.s123-cdn-static.com/uploads/4422163/normal_5fce3479afc4c.pdf
    • https://cdn.sqhk.co/madilaxetevo/jb7FDge/construction_cost_plan_template_excel.pdf
    • https://static.s123-cdn-static.com/uploads/4450501/normal_5fec198f52866.pdf
    • https://cdn.sqhk.co/dedenijikal/Fjgiagj/87718230230.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/ritoma/941264421.pdf
    • https://s3.amazonaws.com/fumiposamisur/63512795007.pdf
    • http://romufadi.epizy.com/kasilobenemagavu.pdf
    • http://taroveruwidiba.onlinewebshop.net/worksheet_clock.pdf
    • http://nuxumejaxumem.epizy.com/ff14_crafting_guide_4._4.pdf
    • http://wawuzir.epizy.com/gukofibalujasuzus.pdf
    • https://s3.amazonaws.com/sizadagazagaj/manualidades_navideas_paso_a_paso_en_fieltro.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_off0000e2c2.bin
3cca4e314d7390556c6004f2a94f7aece901dc23ede672e2466bd4f0769e1084
pdf-font-stream PDF embedded font (sfnt) at offset 0xE2C2 4948 bytes
font_01_sfnt_off0000f382.bin
c81adc549cf4343a86b8c8d700afd01bf284811f25f138426482c7fafdf589df
pdf-font-stream PDF embedded font (sfnt) at offset 0xF382 10740 bytes