Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fa57a5079c205d9…

MALICIOUS

PDF

90.4 KB Created: 2021-03-07 14:40:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6117a7824db92c74f7cf464257f97b53 SHA-1: e439c878a64f82bb27377ad04e11bf7f60ca05d5 SHA-256: 9fa57a5079c205d9153f452669069c1cbe534c68f9425a8c1573c3d1edf6a926
136 Risk Score

Malware Insights

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

The PDF contains a lure related to a 'Pearson geometry textbook chapter 6' and includes a high-risk heuristic firing for an SEO redirector link. This link, https://nipisod.ru/wix?keyword=pearson+geometry+textbook+chapter+6, is the primary indicator of malicious intent, likely leading to a phishing page or malware download. ClamAV also detected this file as Pdf.Phishing.Trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9987

Heuristics 5

  • 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.
  • 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=pearson+geometry+textbook+chapter+6 PDF link annotation
    • https://s3.amazonaws.com/zufaxepixiguxax/the_wind_in_the_willows_book.pdfIn PDF document text
    • https://s3.amazonaws.com/bibejovixapis/mekiginaxetixadof.pdfIn PDF document text
    • https://cdn.sqhk.co/detatakev/hfgecid/xaleropozinalajaraboz.pdfIn PDF document text
    • http://pshcomonhere.xyz/70694551891fu9hx.pdfIn PDF document text
    • https://s3.amazonaws.com/vovabagubajegeb/lonely_planet_armenia_free.pdfIn PDF document text
    • https://s3.amazonaws.com/varolexexus/appy_pie_app_free.pdfIn PDF document text
    • http://sanatoriy-izumrudny.ru/xijivozavowenuvebavaloddi4nu.pdfIn PDF document text
    • https://s3.amazonaws.com/pirosisob/polaroid_template_tumblr.pdfIn PDF document text
    • https://cdn.sqhk.co/pobopuwubox/QXprhfs/planet_star_wars_battlefront_2.pdfIn PDF document text
    • http://reactivaperu-2020.com/4628267827r9n3c.pdfIn PDF document text
    • http://yblda.fun/tuzavelowofisiker200dr.pdfIn PDF document text
    • https://cdn.sqhk.co/bomoxale/hgCf1if/nijukibala.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450502/normal_6033d173cbe9e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410433/normal_5fcc7fd177841.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412568/normal_6033dad38e601.pdfIn PDF document text
    • https://s3.amazonaws.com/zerepuzuze/mowisasokuzu.pdfIn PDF document text
    • http://fbcopyright-center.com/letra_himno_nacional_mexicano_completo_10_estrofasa9lbr.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467287/normal_5fd67113d511f.pdfIn PDF document text
    • https://s3.amazonaws.com/nolarifaforuxop/jawotozezeregodi.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zujopafupo.epizy.com/33359036324.pdfIn PDF document text
    • http://gavojomizam.epizy.com/86244908049.pdfIn PDF document text
    • http://sogefotatuledis.epizy.com/peabody_picture_vocabulary_test_sample_report.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f4da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4DA 1804 bytes
SHA-256: b2928d3c51072b313911efaf18bec5c26afb5f32a50a2789d8244288ec5afb82
font_01_sfnt_off0000fdb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDB6 5844 bytes
SHA-256: 6ba7a8395d77af89232180e77f270f3826581b1c420883910d68a4e83ec0c412
font_02_sfnt_off0001117a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1117A 2732 bytes
SHA-256: ab1a74b52070125fcb3efdd4500c43c15cb53861bc36795008ad9113928b24b8
font_03_sfnt_off00011d44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D44 10840 bytes
SHA-256: 722bf5d5274da9f5c9c5c65da67dc3f9817cd21cc3cd335967a31e2724c6b3ce
font_04_sfnt_off0001428b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1428B 16436 bytes
SHA-256: f68e4b4d42456b360743c7acf69c82a49aa063f25f521dd5c66d8c69e3fa217a