Malicious PDF — malware analysis report

Static analysis result for SHA-256 088eda84abd99397…

MALICIOUS

PDF

76.1 KB Created: 2021-09-06 09:42:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 18278327a2b2d053e45891c4b2b41b8f SHA-1: 185e0ff3031b2a419a10c6947e4568bba347ea40 SHA-256: 088eda84abd99397eead4b7bdf4c0ff4554760326b51aceac1c6247112e8ca84
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link T1071.001 Web Protocols

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. Numerous heuristics point to the PDF being a link farm, with many external URIs hosted on compromised or disposable domains, suggesting a phishing or malware distribution scheme. The presence of a visual download button further supports a lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://philabc.ru/uplcv?utm_term=advanced+quantum+mechanics+pdf+free+download PDF link annotation
    • http://hurtowniagrafit.pl/userfiles/file/kopumifag.pdfIn PDF document text
    • https://alatheir.com/atheirwsfiles/file/26563558129.pdfIn PDF document text
    • https://cecprint.com/images/file/20586244250.pdfIn PDF document text
    • https://viettrungson.com/media//Files/bawokilijenebabowoxazor.pdfIn PDF document text
    • https://autoprofi.ua/userfiles/file/lukobebirudidavigo.pdfIn PDF document text
    • https://pirkitpadangas.lt/ckfinder/userfiles/files/jijowul.pdfIn PDF document text
    • http://popnmusic.fr/userfiles/file/10184820133.pdfIn PDF document text
    • https://backcountryplayground.com/wp-content/plugins/super-forms/uploads/php/files/7f609d1ee7e3c9dfcd92570ea8a2b176/71009742703.pdfIn PDF document text
    • https://monarchwinemerchants.com/wp-content/plugins/super-forms/uploads/php/files/9ea32fc98ae2ca3ca9b4cf8cca2f8aa9/wiranipodifujarivuwi.pdfIn PDF document text
    • http://group-anons.ru/userfiles/files/gulejipo.pdfIn PDF document text
    • http://opalbiosciences.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ca6a16a1bd---70279800931.pdfIn PDF document text
    • http://tavernadelsnoguers.com/wp-content/plugins/super-forms/uploads/php/files/44498a696ea1dd90ebccc06dff54e342/71789270729.pdfIn PDF document text
    • https://www.marvistasales.com/wp-content/plugins/super-forms/uploads/php/files/7a72460c18e98d075228e0241ad41ffe/95378711310.pdfIn PDF document text
    • http://thriftstorewebsites.net/flash/thriftstorewebsites.net/file/7172610832.pdfIn PDF document text
    • https://www.golddustdental.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608630fa5dc65---lujedifusesuligari.pdfIn PDF document text
    • https://campermagazine.tv/public/file/fepazupafaxuvoverugepefi.pdfIn PDF document text
    • https://beribuket.ru/wp-content/plugins/super-forms/uploads/php/files/9388cb05636f1967499420f43a95a882/20241417181.pdfIn PDF document text
    • https://akgoz.zemta.com/uploads/files/8050593934.pdfIn PDF document text
    • https://stcatherine.ac.ug/wp-content/plugins/formcraft/file-upload/server/content/files/160a4392ee934a---jomikosekige.pdfIn PDF document text
    • http://findmealocalpainter.com/insurazon/admin/userfiles/file/58274665335.pdfIn PDF document text
    • https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/ce46b8e873c3e38bef762e422cc4b021/balofijori.pdfIn PDF document text
    • http://gildiamasterov.ru/userfiles/file/foreta.pdfIn PDF document text
    • http://www.training4thefuture.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160c55173b7d93---79794879262.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_off0000c4e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4E8 11264 bytes
SHA-256: c96502ef50b331cfac45a4570aab8b7c9863e08ee99f99bb0b4d0c7dae2bd3ea
font_01_sfnt_off0000defd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEFD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000f70f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF70F 16692 bytes
SHA-256: 91f3b7f338512465cf53a7ae00ff5d5912ef283b96e2dc29a781255d87cae4c9

Open this report in the interactive analyzer, or submit your own file for analysis.