Malicious PDF — malware analysis report

Static analysis result for SHA-256 550e423c801d75b4…

MALICIOUS

PDF

69.1 KB Created: 2021-01-14 13:46:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-04
MD5: 10f3c047ee40f54bde105e4ffddc81c5 SHA-1: ba3884e0a0b5de7585cef53a3c8776591dac8291 SHA-256: 550e423c801d75b4ab9436f52871d300205d961bd1b68a2e5ea1873ad0c513dd
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://trafffi.ru/wb?keyword=third%20grade%20solar%20system%20projects%20for%203rd%20grade In PDF document text
    • https://mufisifarugevap.weebly.com/uploads/1/3/4/5/134595961/7fde8e.pdfIn PDF document text
    • https://cdn.sqhk.co/jowapezo/s7Ogcjf/92250930909.pdfIn PDF document text
    • https://mubajodopiwal.weebly.com/uploads/1/3/1/4/131454521/94d0fe5d9.pdfIn PDF document text
    • https://cdn.sqhk.co/nuzinipaz/jgcidig/pixel_art_flags_color_by_number_online_game.pdfIn PDF document text
    • https://cdn.sqhk.co/zudusidesu/3iehbJj/24927290753.pdfIn PDF document text
    • https://gadipofonikiw.weebly.com/uploads/1/3/4/3/134390141/norazun_jilowefo_mufebatezuwo_demup.pdfIn PDF document text
    • https://xeropupofusopa.weebly.com/uploads/1/3/0/7/130776394/b988ded7e76463.pdfIn PDF document text
    • https://s3.amazonaws.com/mavixu/best_canva_presentation_templates.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/lodekazanaluvi.pdfIn PDF document text
    • https://s3.amazonaws.com/jolozidabi/slickdeals_black_friday_2019_spreadsheet.pdfIn PDF document text
    • https://cdn.sqhk.co/vuzefoveniri/B2jaFRF/nail_biting_treatment.pdfIn PDF document text
    • https://s3.amazonaws.com/kiwopusafize/approach_to_gi_bleeding.pdfIn PDF document text
    • https://lofizalu.weebly.com/uploads/1/3/4/6/134601384/2539677.pdfIn PDF document text
    • https://cdn.sqhk.co/buzivafulet/Yiiji4D/dice_tower_diy_cardboard.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000cf74.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000cf74.bin)
    • 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 extracted file (font_00_sfnt_off0000cf74.bin)

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cf74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF74 5860 bytes
SHA-256: 9647dc981118e6d977d775d1adc4c1dfe5316d174dca7ef6f6a1c757c208d001
font_01_sfnt_off0000e350.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE350 10548 bytes
SHA-256: 831c8d3cf985e103b128e5fcbe4de82304f7b335b2bf6ff9a2e70390a2a9ea12

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