Malicious PDF — malware analysis report

Static analysis result for SHA-256 09d59a5e6b111c74…

MALICIOUS

PDF

78.2 KB Created: 2021-03-07 14:12:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d4a3ec36cb14c103c2f84b9f5e4c5d05 SHA-1: 025d5b4b4334d16fa967d2a1a791cd87d0956c3d SHA-256: 09d59a5e6b111c74b4c8220f7c22321edc1661886975da30dc1da5838f9705b6
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous external links, many pointing to SEO-optimized PDF documents, suggesting a link farm or phishing campaign. The heuristic PDF_SEO_LINK_FARM indicates a mass of external links, and PDF_SEO_UTM_REDIRECTOR_LINK specifically flags an image lure leading to an SEO redirector. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or malware distribution via the linked content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • 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://nipisod.ru/wix?keyword=pythagorean+theorem+test+answers PDF link annotation
    • https://s3.amazonaws.com/jolozidabi/vejakofip.pdfIn PDF document text
    • http://roman-holidays.shop/emotional_songs_mr_jatt7gv9x.pdfIn PDF document text
    • http://faxusupovetek.sportsontheweb.net/63864604095.pdfIn PDF document text
    • https://vemenujobife.weebly.com/uploads/1/3/5/3/135399872/7800640.pdfIn PDF document text
    • https://cdn.sqhk.co/soxesemu/PQAH0ja/ferrari_driving_experience_los_angeles.pdfIn PDF document text
    • https://s3.amazonaws.com/mukut/tanatologia_forense_unam.pdfIn PDF document text
    • https://s3.amazonaws.com/kotenu/briggs_and_stratton_repair_videos.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzaganog/shutterfly_upload_app_for_android.pdfIn PDF document text
    • https://jovigazever.weebly.com/uploads/1/3/1/6/131637362/28c0b3.pdfIn PDF document text
    • http://memowelubi.mygamesonline.org/vizio_sound_bar_5.1_manual.pdfIn PDF document text
    • https://cdn.sqhk.co/sarafogu/g3F19w4/top_up_my_eir_account.pdfIn PDF document text
    • https://s3.amazonaws.com/gedimuta/ratijilij.pdfIn PDF document text
    • https://s3.amazonaws.com/wuzalugiseto/deutsche_orthographie.pdfIn PDF document text
    • https://cdn.sqhk.co/jemowevu/94iCSRM/wukixoser.pdfIn PDF document text
    • https://cdn.sqhk.co/tawavumazo/ehejgwD/25906742571.pdfIn PDF document text
    • https://nixunirebexif.weebly.com/uploads/1/3/0/7/130776125/099c9.pdfIn PDF document text
    • http://bodyita.space/baby_monitor_phone_appnwloq.pdfIn PDF document text
    • http://hookup756.fun/xokowobalopipazadud3rnye.pdfIn PDF document text
    • https://s3.amazonaws.com/xidulumexi/gukafegopikovof.pdfIn PDF document text
    • http://movawizaxaxato.mywebcommunity.org/sunbeam_heated_blanket_directions.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
    • 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_off0000e8e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8E3 5000 bytes
SHA-256: 142781a0cb1d272c2c7b533c1991ca1093d6871fd40ecb804e72cfe518be4616
font_01_sfnt_off0000f9b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9B8 10424 bytes
SHA-256: 9fd2ce23aeaff66b034b1bc4388a6366e22291212389f93cf928dd593ffad441
font_02_sfnt_off00011d2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D2C 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34