Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a9979055778f1bc…

MALICIOUS

PDF

73.1 KB Created: 2021-02-26 18:38:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: e36d2052bc152209d3f80db911f79594 SHA-1: 6df59db45cbc92ad190c0a8b470cf58076364499 SHA-256: 1a9979055778f1bcc41f51afac6607fb6683c66a3aa83addf9784e3078f0fc23
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://fokemale.ru/wix?keyword=parts+of+a+flower+lesson+plan+5th+grade PDF link annotation
    • https://sewenafefu.weebly.com/uploads/1/3/4/0/134012434/17368c1040.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471488/normal_5fe2b4ba8edc3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476268/normal_6009c820d4cb7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458614/normal_5fd10dcd9aaeb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370767/normal_602ee3b0a5efb.pdfIn PDF document text
    • https://kekufakaxuw.weebly.com/uploads/1/3/2/7/132740700/tikesuwoj.pdfIn PDF document text
    • http://wowuzarupi.iblogger.org/72321750266.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://getojigukas.epizy.com/fasuda.pdfIn PDF document text
    • http://zojabavikejowi.rf.gd/89793707693.pdfIn PDF document text
    • http://dufexisoji.rf.gd/telefonos_android_baratos_usados_caracas.pdfIn PDF document text
    • http://fudewalazakukug.epizy.com/dogubakuvoxivogaromiv.pdfIn PDF document text
    • https://s3.amazonaws.com/nevovumowa/73945395142.pdfIn PDF document text
    • https://s3.amazonaws.com/xokebore/citrus_rootstock_selection_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/guwutivupudutu/68432576777.pdfIn PDF document text
    • http://biforobajimebug.epizy.com/70487596214.pdfIn PDF document text
    • http://lujolugajejizog.epizy.com/32092290593.pdfIn PDF document text
    • https://s3.amazonaws.com/xumakomowi/fijarabom.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_off0000e139.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE139 5520 bytes
SHA-256: 5838a9e3bf29678c9a7df6b52ca3717494e1bcbb2b6a8f4c7eb09168adae2ba3
font_01_sfnt_off0000f40e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF40E 10224 bytes
SHA-256: 070f786d3a4c23adbf004db79a9661cd5e16ec1c7ca4f01823caa7ceb0016f72