Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4714cf67f4eb14b…

MALICIOUS

PDF

70.9 KB Created: 2021-02-18 23:55:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 8eb0c92e37d3ebb1a2f21ed68c86d5e4 SHA-1: 1259ba41b322076e0c45ce769b83375f5b33dd82 SHA-256: e4714cf67f4eb14b8028f54a0baaf9f9f0d7ba691e0c1f392847be782381d69b
204 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://jacksth.ru/wix?keyword=venture+deals+4th+edition+pdf+free PDF link annotation
    • http://prizinsta365.online/85806440816nnv8x.pdfIn PDF document text
    • http://hookup157.site/mikabu2vy3j.pdfIn PDF document text
    • http://mscredit.info/we_love_master_walkthroughd7mcb.pdfIn PDF document text
    • https://cdn.sqhk.co/jidulopavoji/ibGDFib/83552347821.pdfIn PDF document text
    • https://jabizujosewej.weebly.com/uploads/1/3/4/5/134584717/93c9a270307e55.pdfIn PDF document text
    • http://covid-19online.site/baldur_s_gate_enhanced_edition_android_cheats6tilj.pdfIn PDF document text
    • http://leopards.space/decimal_word_problems_4th_grade_worksheetsjxqdt.pdfIn PDF document text
    • http://classicalnaturally.com/kutodonuxanujuwojewunoxeri2qd.pdfIn PDF document text
    • http://dkmz1.club/cara_membuat_video_menjadi_live_wallpaper_pcl9klz.pdfIn PDF document text
    • http://bestgirl69.com/dreamweaver_questions_and_answersdljua.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446379/normal_600d9d512c9ac.pdfIn PDF document text
    • https://zuvoxowiton.weebly.com/uploads/1/3/0/8/130813332/157563.pdfIn PDF document text
    • https://cdn.sqhk.co/javeduner/idPxibM/zatuve.pdfIn PDF document text
    • https://xijofufakeziti.weebly.com/uploads/1/3/1/3/131380729/3994365.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/savifin/silk_sheets_in_store_near_me.pdfIn PDF document text
    • https://s3.amazonaws.com/jajoxulabojaso/dawijudo.pdfIn PDF document text
    • https://s3.amazonaws.com/zidenigad/medical_dictionary_by_farlex_apkpure.pdfIn PDF document text
    • https://s3.amazonaws.com/dinigugaxej/76136934766.pdfIn PDF document text
    • https://s3.amazonaws.com/xutomoxu/gogobajugis.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_off0000d7d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7D4 5180 bytes
SHA-256: e0d3ed6554fec2c39ff85602390ac9b366cb83b135066c2454a88a0d1f797f46
font_01_sfnt_off0000e974.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE974 10860 bytes
SHA-256: 374a7c3def3adb19ed859b11dfc955d8482b8cd95fa126a588723b935f1ceb3d