Malicious PDF — malware analysis report

Static analysis result for SHA-256 f966bf017fc07dc2…

MALICIOUS

PDF

75.8 KB Created: 2021-04-20 16:52:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 238148243dd894d829c472e4b074f480 SHA-1: 588ff6b40dff3eaeb004a7674a57ddf34c688158 SHA-256: f966bf017fc07dc2133bdf646ff2b2535a002fccee979d071f8a09463c610e00
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 0.9997

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 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://maypoin.ru/strik?utm_term=which+is+best+electric+wire+for+house+wire+in+india PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4365628/normal_5fc85084101fb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404741/normal_5fde1ff2e5db9.pdfIn PDF document text
    • https://cdn.sqhk.co/wugeguxu/Thihi4c/25337222922.pdfIn PDF document text
    • http://xuziduliwilu.iblogger.org/aswamedham_poem_summary_in_malayalam.pdfIn PDF document text
    • https://tidukefawa.weebly.com/uploads/1/3/4/8/134851120/lopemapitexug.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480580/normal_60276e0544c52.pdfIn PDF document text
    • https://cdn.sqhk.co/gebitasixa/jjuhaGT/legur.pdfIn PDF document text
    • https://basuxebuj.weebly.com/uploads/1/3/1/3/131379820/puzapofetutamowika.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470681/normal_605ad1a0c8aaa.pdfIn PDF document text
    • https://cdn.sqhk.co/gojinuma/zFKhgjb/network_monitoring_tools_for_windows_7.pdfIn PDF document text
    • https://nixitemolepof.weebly.com/uploads/1/3/4/8/134870129/ridik_dovasidat_pizunevixop.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/setigafat/1996_polaris_xplorer_400_carb_settings.pdfIn PDF document text
    • https://s3.amazonaws.com/toguvaju/dikov.pdfIn PDF document text
    • http://jexolazoke.epizy.com/spastic_paraplegia_rating_scale.pdfIn PDF document text
    • http://sikofus.epizy.com/jexetizubosalapi.pdfIn PDF document text
    • https://s3.amazonaws.com/rumezo/sudafisap.pdfIn PDF document text
    • https://s3.amazonaws.com/viregujipowuru/gofebuxaledurivi.pdfIn PDF document text
    • http://jokiperone.epizy.com/xalix.pdfIn PDF document text
    • http://kikevanalujik.rf.gd/69978007096.pdfIn PDF document text
    • https://s3.amazonaws.com/kuboki/viwefawesezobujo.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_off0000ebd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBD3 5356 bytes
SHA-256: 6df82fb5fa7d04b7e57a3dc07a8e8c8ee982af63e98f4be56a1fd83f23c83c3e
font_01_sfnt_off0000fe1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE1C 10340 bytes
SHA-256: 381e1a411ea838f8b60eb61e86c1c55cf7e757b2a2757893501ee40d10bfbc93

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