Malicious PDF — malware analysis report

Static analysis result for SHA-256 22022c1e22ce1779…

MALICIOUS

PDF

69.7 KB Created: 2021-02-27 15:13:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 7afff77b6a2b320a2f6315752a13d245 SHA-1: b4b28dbaa27a50c9f6b817102c38a163b0c160de SHA-256: 22022c1e22ce1779a522b81049cf99d5b431c2c88e18096f1b330bb8e84b4fc6
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTH
    A PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
  • 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/award?keyword=around+the+world+in+80+days+game+free+online PDF link annotation
    • https://cdn.sqhk.co/japewaturu/wtiaojb/20736973118.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445733/normal_60243671c6223.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402252/normal_6023824f1f47a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368244/normal_601af83560336.pdfIn PDF document text
    • http://wei-nmvc.com/kixuboru3h2z.pdfIn PDF document text
    • http://chategratis.online/daewoo_nubira_1._6_16v_service_manualwpg45.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418755/normal_6023d5dc217da.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450889/normal_5fd7deb8beb1d.pdfIn PDF document text
    • http://trychambre.xyz/23347081493imb5d.pdfIn PDF document text
    • https://cdn.sqhk.co/rivojotewez/jh8RicD/suwirikosi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/fivebo/bienvenue_chez_les_ch_tis.pdfIn PDF document text
    • https://s3.amazonaws.com/wazagidonux/chatradhara_bengali_poem.pdfIn PDF document text
    • https://s3.amazonaws.com/vawoginele/80422647164.pdfIn PDF document text
    • https://s3.amazonaws.com/tixeligufokup/cisco_switch_sg350x_datasheet.pdfIn PDF document text
    • https://s3.amazonaws.com/dadupawo/getowadunebuk.pdfIn PDF document text
    • https://s3.amazonaws.com/libeganot/chevy_tracker_2001_manual.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c7cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7CB 5724 bytes
SHA-256: b229dca8a3b3a59a44a570143f8eb058fb52b4b7a5f642c608f2f0659b476b8e
font_01_sfnt_off0000db27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB27 9640 bytes
SHA-256: 2a5e0e08026ca0ba2852596c2f434962577b6513e5058b0539c0702dd21b9d73
font_02_sfnt_off0000fbb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBB8 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3