Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a2caa8d26bf393e…

MALICIOUS

PDF

71.7 KB Created: 2021-02-27 12:52:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: a7d476a5751d82d133ab76da77df535e SHA-1: a50688ccf77e97ab4c02e1f9bff81fa801319ede SHA-256: 4a2caa8d26bf393e258fff4defd495d438011fb23625355c9347aec32ffc8a3f
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://golowaki.ru/wix?keyword=why+is+life+like+a+shower+worksheet+answer+key PDF link annotation
    • http://helpcenterbusiness.xyz/songpop_2_guess_the_song_itunesewhug.pdfIn PDF document text
    • https://waziketezu.weebly.com/uploads/1/3/4/6/134648841/titaw-gaxefog.pdfIn PDF document text
    • https://cdn.sqhk.co/pananumujo/GXKggjb/galer.pdfIn PDF document text
    • https://cdn.sqhk.co/bosesegivu/jj8ijgB/desiree_lantz_hunter.pdfIn PDF document text
    • https://cdn.sqhk.co/ruwonumatag/Bgckbih/among_us_sabotage_sound_mp3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469349/normal_601e59b3c5ce3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459463/normal_5fde668e957a0.pdfIn PDF document text
    • https://lujogisuz.weebly.com/uploads/1/3/4/9/134904514/1468fd292206.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393348/normal_6008ec101ec14.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://relogevavikidid.epizy.com/56844403254.pdfIn PDF document text
    • http://japinoxizidunub.myartsonline.com/62333067469.pdfIn PDF document text
    • http://sudurima.rf.gd/93676718074.pdfIn PDF document text
    • http://dalejavevofa.rf.gd/68320096496.pdfIn PDF document text
    • http://faguvepeme.rf.gd/mifumimixevonuker.pdfIn PDF document text
    • http://pelebirepopo.onlinewebshop.net/argumentative_essay_structure.pdfIn PDF document text
    • http://derarav.rf.gd/bhaktha_siriyala_songs.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dd2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD2D 5124 bytes
SHA-256: e810d114414cab74793e134e2c20e6fc647cf994d252c65c3eb28486f1f840e1
font_01_sfnt_off0000eeb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEB8 10268 bytes
SHA-256: e2136429298700f746134020a0a76321c243336282ed68acd854610f31fdafac