Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f77ceeeec64171b…

MALICIOUS

PDF

67.3 KB Created: 2021-02-26 18:58:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 99d9ac2e9068124abf12b99dbb64d4b7 SHA-1: 99494ae023b794eaf77aa2c9a47829183cfb5e29 SHA-256: 1f77ceeeec64171bf5861608289d535710c0870a2134ebf7cf2b136764696b44
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://dugedepap.ru/wix?keyword=chemistry+matter+and+change+workbook+answer+key PDF link annotation
    • http://haifaiv.ru/527242534311kspr.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482218/normal_5fe05a775d97b.pdfIn PDF document text
    • http://faceit.su/12190735384kpd05.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386828/normal_5fcfb70fbd89c.pdfIn PDF document text
    • https://tilinonulubun.weebly.com/uploads/1/3/4/6/134614078/6924d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393890/normal_6012b1cc35c66.pdfIn PDF document text
    • http://imm-shoes2.club/58299753489io6d1.pdfIn PDF document text
    • http://dutov.org/tilotogetovinivekuxalutoy63de.pdfIn PDF document text
    • https://vokijovagugudis.weebly.com/uploads/1/3/0/7/130776016/4487936.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417523/normal_5fce9b130c956.pdfIn PDF document text
    • http://uanews.website/greek_root_words_that_start_with_geoq9o8b.pdfIn PDF document text
    • http://adyga.site/vululuwasupipizewiwufagojmin6z.pdfIn PDF document text
    • http://tizezs.xyz/86171741135of5wx.pdfIn PDF document text
    • https://bawidonawasaz.weebly.com/uploads/1/3/4/3/134354070/mololu_vonite.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/rodigapigeta/27024595220.pdfIn PDF document text
    • https://s3.amazonaws.com/rimejiguvif/bimanual_examination_procedure.pdfIn PDF document text
    • https://s3.amazonaws.com/viwoxuz/pumobad.pdfIn PDF document text
    • https://s3.amazonaws.com/bupijila/73408607307.pdfIn PDF document text
    • https://s3.amazonaws.com/satudifin/lemebirem.pdfIn PDF document text
    • http://dosututoseres.rf.gd/satanic_bible_free.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_off0000cafb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAFB 5624 bytes
SHA-256: 1f65d99da088938f77fd7e36e7f4196880f88002663082378782a3272a7d0117
font_01_sfnt_off0000de01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE01 9812 bytes
SHA-256: b92607a3c0b217684eb9368081669bc12bee541d66c95ad6b42517472a3b3590