Malicious PDF — malware analysis report

Static analysis result for SHA-256 88a2fa1c063ee557…

MALICIOUS

PDF

71.9 KB Created: 2021-03-18 23:58:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 6490d7e98f8240f339120b1536ecf415 SHA-1: b8a2530b5c478b24d6fd13db4c6a22d45357ad36 SHA-256: 88a2fa1c063ee5575f9c2c342f7c4d21d72aa13b8b4e439413157037f4696968
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, with several pointing to suspicious domains like maypoin.ru and 1xbet-football.fun, suggesting an attempt to redirect users to malicious content. The document body, though heavily obfuscated, contains metadata related to PDF generation, indicating it's likely a crafted lure.

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://maypoin.ru/award?keyword=arte+moderna+giulio+carlo+argan+pdf+download PDF link annotation
    • http://1xbet-football.fun/tefosokitebegod89ul.pdfIn PDF document text
    • http://martans.space/22275310832ba4sl.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480743/normal_5fefd0464fcc3.pdfIn PDF document text
    • http://sweetmeet.online/16477256192y132v.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402533/normal_5ff0b88db7225.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471992/normal_6019d13dbcc38.pdfIn PDF document text
    • http://mnogolidov.xyz/mubenalevawodijoniwopodb3zj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403808/normal_5fcd0e3e96150.pdfIn PDF document text
    • http://parujom.iblogger.org/wunojowidavelijidugufet.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kizifisen.rf.gd/bunafebibolexelavug.pdfIn PDF document text
    • https://a84030a7-2e48-4039-807a-383e2b7216cc.filesusr.com/ugd/c5d40f_5cda554dfb20439fa589953d61323301.pdf?index=trueIn PDF document text
    • http://zeduvekitodili.rf.gd/kejin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e1594dc-81ec-4b24-8fa7-2dc086341050/what_months_is_the_fe_exam_offered.pdfIn PDF document text
    • http://sanukewefigani.rf.gd/lijapavijesilalo.pdfIn PDF document text
    • http://nilipinuz.rf.gd/46229912278.pdfIn PDF document text
    • http://pofumitiko.epizy.com/hiddenme_face_aging_app.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e83f5e71-9740-4222-82f9-f6e491c577e7/59112563563.pdfIn PDF document text
    • https://3745348a-78a0-42d7-8ff4-af2b45bf5faf.filesusr.com/ugd/02631b_6fba3bb54a2549fa83e787e96320b5f4.pdf?index=trueIn PDF document text
    • http://meladuk.rf.gd/bozatukesofejoxaxemito.pdfIn PDF document text
    • http://patabajisof.epizy.com/nursery_activities_worksheets.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_off0000d152.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD152 5380 bytes
SHA-256: 1a4769141500c82171805d0051d81184a7a385a5d7d31baabe822c3616de5c75
font_01_sfnt_off0000e396.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE396 14244 bytes
SHA-256: 15f61df528ddac63cf29816aea8914e1624c0fe32c076523aaee09fbacc9685c

Open this report in the interactive analyzer, or submit your own file for analysis.