Malicious PDF — malware analysis report

Static analysis result for SHA-256 59720c9464048a08…

MALICIOUS

PDF

76.5 KB Created: 2021-04-12 06:54:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 055698c0b4d4b9a3b2dc84f732767d34 SHA-1: 7ef8f0fd5f7c7661d9bd4b0af2a21fd3725461fa SHA-256: 59720c9464048a081ad9dd8062e35b3dab4a405eae13425ab0092ef0ab2a1f9f
96 Risk Score

Malware Insights

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

The file is a PDF that contains a lure related to educational standards, directing the user to a suspicious URL. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. No scripts were extracted, but the presence of external URIs suggests an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://botokaw.ru/strik?utm_term=california+common+core+science+standards+3rd+grade
    • http://difuraw.22web.org/51173035901.pdf
    • http://help-feedback-amzn6.xyz/nalenudikoxajuragesaxigizuv6fd.pdf
    • http://gratoraama.website/rakobewufezevebdztka.pdf
    • https://cdn-cms.f-static.net/uploads/4387565/normal_602c6dcde553a.pdf
    • http://static-get.top/orange_ghost_pied_ball_pythoni3f9q.pdf
    • http://beveram.66ghz.com/94151541331.pdf
    • http://fodokimi.22web.org/backuptrans_android_iphone_line_transfer_coupon.pdf
    • https://cdn-cms.f-static.net/uploads/4371783/normal_60470cc550bc8.pdf
    • http://leree4.club/golfbuddy_voice_2_reviewsvnmxe.pdf
    • http://rikeropovi.22web.org/what_type_of_oil_does_a_2016_chevy_malibu_take.pdf
    • http://nesobaka3.xyz/ryobi_plunge_router_home_depote67to.pdf
    • https://static.s123-cdn-static.com/uploads/4392860/normal_5febeee6d59d3.pdf
    • https://static.s123-cdn-static.com/uploads/4401692/normal_5ff78511a8882.pdf
    • https://static.s123-cdn-static.com/uploads/4453329/normal_5fc810d4973e0.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://kubomefewofumim.atwebpages.com/gokugadosibanuxug.pdf
    • http://vakifavu.onlinewebshop.net/wezovovodi.pdf
    • https://s3.amazonaws.com/tosego/52151125227.pdf
    • https://s3.amazonaws.com/baxegezivumi/44819142097.pdf
    • http://duwazobikojuk.epizy.com/attu_movie_single_part.pdf
    • http://rojaxenutu.rf.gd/esol_entry_3_writing_exam_answers.pdf
    • https://s3.amazonaws.com/boxalewijim/43091067007.pdf
    • http://dusuponugusodu.rf.gd/before_you_start_your_day_piano.pdf
    • https://s3.amazonaws.com/xesigeze/dedesixuluwuxilegebuxin.pdf
    • http://tivurazug.rf.gd/steven_pinker_the_better_angels_of_our_nature_quotes.pdf
    • http://dogugamegomijit.rf.gd/xoxol.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_off0000ed29.bin
80490bddfda129fb564d88486b6710c8e5f008ad5bdb47b4a4aafc35deee654c
pdf-font-stream PDF embedded font (sfnt) at offset 0xED29 5408 bytes
font_01_sfnt_off0000ff79.bin
73ffe90e1f4a856a17438f7e408be4b88d695ca13fdbd396943dd49504747dab
pdf-font-stream PDF embedded font (sfnt) at offset 0xFF79 10696 bytes