Malicious PDF — malware analysis report

Static analysis result for SHA-256 c95c9dbcb62078c5…

MALICIOUS

PDF

76.2 KB Created: 2021-04-16 08:54:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 29dc3ff36bc8379270f6b55cbed47c82 SHA-1: f76d00da35deece888b1e79bfcb572bb3b995c8c SHA-256: c95c9dbcb62078c560e40fb5544ee692f3bac6c6b2cb1517991d401d20bb495d
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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 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.
  • 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/strik?utm_term=what+is+a+guardian+ad+litem+looking+for+in+a+home+visit PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4483602/normal_5fc7dcd67671f.pdfIn PDF document text
    • https://wipibadosu.weebly.com/uploads/1/3/4/4/134438179/474af3.pdfIn PDF document text
    • https://genebametujo.weebly.com/uploads/1/3/4/9/134904617/ab7d3.pdfIn PDF document text
    • http://pollsexpert.com/2006_chevy_malibu_ss_specs4qmvq.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478655/normal_600281d39ddbb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482849/normal_5fde12ab5c47f.pdfIn PDF document text
    • http://weinmvc.net/pioneer_vsx_1021_k_firmware_updatec4ysf.pdfIn PDF document text
    • https://jevamupoledi.weebly.com/uploads/1/3/4/7/134712268/ramefi-wimegudar.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465149/normal_5fca11393ab87.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460228/normal_605eef69e799d.pdfIn PDF document text
    • http://rabota-plus.club/continents_and_oceans_quiz_printable_freersxdf.pdfIn PDF document text
    • http://about-central.com/75313527200lulb7.pdfIn PDF document text
    • https://vegirizekor.weebly.com/uploads/1/3/1/4/131407876/gubelidasetud_kifikil_retokomoletito_rezotiwaw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493890/normal_60650dea70a39.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423188/normal_602490964b26c.pdfIn PDF document text
    • https://zawanudodulir.weebly.com/uploads/1/3/1/4/131452903/vifezazalaraza-pufizew.pdfIn PDF document text
    • https://jasoveloxera.weebly.com/uploads/1/3/5/9/135967924/zarisozofosotowid.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369911/normal_60238a648cb28.pdfIn PDF document text
    • https://gedibixofesona.weebly.com/uploads/1/3/4/6/134688069/68130d2.pdfIn PDF document text
    • https://suranekiwexem.weebly.com/uploads/1/3/4/6/134698667/tarunefufir_redobowevalidi_tidaxew.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470552/normal_6018649b99985.pdfIn PDF document text
    • https://sekojeti.weebly.com/uploads/1/3/4/5/134583019/filamifomaneg.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389793/normal_606e5aaf23236.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422390/normal_5ff2039801fc8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000ed22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED22 5456 bytes
SHA-256: af25ad68c186952ffe5a3d5285569bcb300603ba005d0dd29367f7f5eb8bca49
font_01_sfnt_off0000ff99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF99 10328 bytes
SHA-256: 1c72a3f172ef275a1450873c92a3936b999fc6ee6d2b0c84477639e8b2a111b4

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