Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3c1c2d54418c80b…

MALICIOUS

PDF

74.0 KB Created: 2021-03-18 15:28:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: cae63be24b126d72d1cd714ed79ee8e5 SHA-1: 229dd1a6e31eb06332eacf1bf4a33071a77ef553 SHA-256: b3c1c2d54418c80b24c29993e6e8a9ff508280cfcbdb57e68195717af4c16405
194 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains a large number of external links, many pointing to disposable domains, suggesting a link farm designed to obscure the ultimate malicious destination. The document body, though heavily obfuscated, appears to be a lure related to 'meeting plan template excel'. The presence of numerous external URIs and the overall structure strongly suggest this PDF is used to redirect users to malicious content, likely a phishing page or malware download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 7

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://ponafet.ru/123?utm_term=meeting+plan+template+excel PDF link annotation
    • https://nelabudojila.weebly.com/uploads/1/3/4/6/134666505/8137a58889.pdfIn PDF document text
    • http://yazansoft.com/228139849219uo9j.pdfIn PDF document text
    • https://gubaxuxozixiviw.weebly.com/uploads/1/3/1/3/131383744/5732372.pdfIn PDF document text
    • https://zovuwiveja.weebly.com/uploads/1/3/4/8/134880504/nasugoxeg-daretekokel.pdfIn PDF document text
    • https://muverope.weebly.com/uploads/1/3/0/7/130776407/rodipanezop.pdfIn PDF document text
    • http://filanion.online/nissan_xtrail_2011_user_manual2vzlm.pdfIn PDF document text
    • https://kalizijowu.weebly.com/uploads/1/3/4/7/134733304/rilibetof-supumup-rutonetiraj-datosobaluwa.pdfIn PDF document text
    • http://dmgameplan.com/26483772818tvhs6.pdfIn PDF document text
    • http://hyipinvest.site/examples_of_secondary_essays_for_medical_schools8ezc.pdfIn PDF document text
    • https://zitadinenere.weebly.com/uploads/1/3/1/8/131871439/wexubovawizikaw-gufomaxerevexo.pdfIn PDF document text
    • https://bobejezesolaz.weebly.com/uploads/1/3/4/6/134622741/6b72f460994d4b.pdfIn PDF document text
    • http://vuwubuwo.22web.org/scratch_app_for_mac.pdfIn PDF document text
    • http://samettemiz.xyz/53672259325epno.pdfIn PDF document text
    • http://skout.tech/how_does_dependency_theory_define_developmentby7zt.pdfIn PDF document text
    • http://triple-doska1.club/the_wisdom_of_insecurity_audiobook11o2r.pdfIn PDF document text
    • https://lerizizevu.weebly.com/uploads/1/3/4/3/134314130/penijezakulopi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jovekus/dazilakawaximep.pdfIn PDF document text
    • http://luzafofefo.rf.gd/52252059566.pdfIn PDF document text
    • https://s3.amazonaws.com/fizup/how_to_reset_genie_keypad.pdfIn PDF document text
    • http://todosix.epizy.com/funny_answers_to_what_you_up_to.pdfIn PDF document text
    • https://s3.amazonaws.com/kopisigapub/camranger_app_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/roxawo/voguperuzewurumigajukigub.pdfIn PDF document text
    • https://s3.amazonaws.com/viregujipowuru/gereluvu.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_off0000e554.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE554 5052 bytes
SHA-256: 8bf4c52b49e07ff79d25beaa83ae17eb538da6e610eda8718938ea1b187a7a22
font_01_sfnt_off0000f692.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF692 10556 bytes
SHA-256: f2b6f39f74ee2537ba2bf3d49c1ea115741ec6798df05fe7f2fdd8a99c01eb9c