Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa8e31c948a4952e…

MALICIOUS

PDF

400.7 KB Created: 2022-02-12 16:48:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-06
MD5: a07a20bfcc956008f5bee2394fc0b9b0 SHA-1: db60ee411e2dc91ad9d67aa5c1b60fd6407f3aeb SHA-256: aa8e31c948a4952e8aa9a033d44210d14af30dbdab48ddc0cb06bdf6cc6fe2df
174 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7151

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://yoyep.co.za/XSRYdR1H?utm_term=iphone+11+wallpaper+4k+free PDF link annotation
    • http://dydlhx.com/upfiles/file///5384564531.pdfIn PDF document text
    • http://baota84000.coco1490.com/upload/file_folder/file/xorurukemesapu.pdfIn PDF document text
    • https://sensiblemachines.com/ckfinder/core/connector/php/files/95142561453.pdfIn PDF document text
    • https://dfa-finanz.de/wp-content/plugins/formcraft/file-upload/server/content/files/161c141c629204---lasinuwe.pdfIn PDF document text
    • https://aurorabersinar2.com/contents/files/23933998452.pdfIn PDF document text
    • http://sswjeans.com/files/49835258597.pdfIn PDF document text
    • http://theettiaresmontreal.com/clients/f/f0/f03dfc1790708d0b03c48e9879ef2ea6/File/kijuvosubumukijizanabixe.pdfIn PDF document text
    • http://europeanprofservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/161d80cf2849dd---68340110942.pdfIn PDF document text
    • http://cachnhietcacham.vn/Images_upload/files/vifepijaz.pdfIn PDF document text
    • http://www.gamylai.vn/uploads/files/dabupubafenufupub.pdfIn PDF document text
    • https://www.sacproblemleri.com/wp-content/plugins/formcraft/file-upload/server/content/files/161959a39ba560---rugafekeregifiranugawa.pdfIn PDF document text
    • https://ekinyalitim.com/depo/sayfaresim/file/xujiwinavomaw.pdfIn PDF document text
    • http://www.advancedevents.ro/wp-content/plugins/formcraft/file-upload/server/content/files/161f6a6f77564b---xemusifasanofuzegirexoji.pdfIn PDF document text
    • http://forma8.kz/ckfinder/userfiles/files/zukeramasigokale.pdfIn PDF document text
    • http://www.valathors.com/ckfinder/userfiles/files/78574160162.pdfIn PDF document text
    • http://nawoo.net/userData/board/file/33961293405.pdfIn PDF document text
    • https://marcuspietrek.de/MARCUS/files/file/tukifotelud.pdfIn PDF document text
    • https://isped.cz/kcfinder/upload/files/6240474798.pdfIn PDF document text
    • https://www.advids.co/wp-content/plugins/formcraft/file-upload/server/content/files/1616d4d6a2ee87---forurovasenup.pdfIn PDF document text
    • http://splogservice.ru/content/file/14685917703.pdfIn PDF document text
    • http://xn----8sbemnkjd7bfu.xn--p1ai/design/img/upload/file/mebid.pdfIn PDF document text
    • http://visualpaint.com/wp-content/plugins/formcraft/file-upload/server/content/files/161886e6539052---rigid.pdfIn PDF document text
    • https://www.afoa.org.ar/backend/ckfinder/userfiles/files/79098208894.pdfIn PDF document text
    • http://yuseigachi.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160fe84ca486ed---96792597372.pdfIn PDF document text
    • http://rztria.ru/kcfinder/upload/files/divixarojotinapesuzubo.pdfIn PDF document text
    • http://ilturismoinitalia.it/userfiles/files/20358152803.pdfIn PDF document text
    • http://automotiveenergy.cz/userfiles/file/84180440752.pdfIn PDF document text
    • https://www.hit-education.com/wp-content/plugins/super-forms/uploads/php/files/rf2pt9m92aju4ij6i59569ug66/giguxegexok.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005d24c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D24C 19188 bytes
SHA-256: 8f9ac56daeef8c2742da1f09c26becce6d2294eabec0a574d8f16521e3ee5332
font_01_sfnt_off000604da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x604DA 10356 bytes
SHA-256: 7468a28db2111764d570037f9d8bb9f9c15e0d89360fa37773a28817586b7b28
font_02_sfnt_off00061c50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61C50 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9