Malicious PDF — malware analysis report

Static analysis result for SHA-256 7548e99f88aaa535…

MALICIOUS

PDF

68.6 KB Created: 2021-02-25 13:54:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 1af199e06bca6b7004808a305a0e8842 SHA-1: 128fec7e8ba63d1c4c6fe8160fcdb5b79940f512 SHA-256: 7548e99f88aaa535aac3559d1617e0d15b07d0194c02fe22f2793f212ec03359
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://bologen.ru/award?keyword=cyrano+de+bergerac+book+english PDF link annotation
    • https://cdn.sqhk.co/pejozujemu/gigdggy/dupunejupamubuwefanipe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392218/normal_6019ddb90b05d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371023/normal_602af95f7a577.pdfIn PDF document text
    • http://glossywp.online/6952143204pdkv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418192/normal_6015872dbe54f.pdfIn PDF document text
    • https://cdn.sqhk.co/jubawiwa/ibhhIif/rinigejokoxesakilowa.pdfIn PDF document text
    • http://fb-ig-violation.com/doyles_guide_barristers_qldnkfa0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484624/normal_5ff897dfb8ab4.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/buxoparadazegu/xakuxanixamo.pdfIn PDF document text
    • https://s3.amazonaws.com/kovozenamofox/how_to_connect_ihip_earbuds_to_iphone.pdfIn PDF document text
    • https://s3.amazonaws.com/xonaxevetaf/11163625979.pdfIn PDF document text
    • https://s3.amazonaws.com/lorugipopuxe/mizebupepalavavi.pdfIn PDF document text
    • https://s3.amazonaws.com/fisulefajow/zijukezisoseni.pdfIn PDF document text
    • https://s3.amazonaws.com/jewizopukuni/59718257706.pdfIn PDF document text
    • https://s3.amazonaws.com/wujafivabipo/advancing_vocabulary_skills_short_version.pdfIn PDF document text
    • https://s3.amazonaws.com/xonobijikivo/marine_corps_gym_shorts.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_off0000ceb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEB0 5412 bytes
SHA-256: 8d0552c6a4ef7d7252772d0a3fe7fcb863b00a3e39363120770fc60454d21a84
font_01_sfnt_off0000e114.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE114 10532 bytes
SHA-256: 9210bb2e8b9175a9370f1092602140ce82cce8431fe5a2fc3d0a9663d7ba7daa