Malicious PDF — malware analysis report

Static analysis result for SHA-256 710e9ffc02266686…

MALICIOUS

PDF

84.2 KB Created: 2021-09-02 00:38:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 6ce65e067800bf617e8f6df2b154abb8 SHA-1: eaf9d0481e5280c7fcbcb8f92e14f171bfac3b5c SHA-256: 710e9ffc02266686daac8aa0f7107c346c40586b14a3d39c408997ce2cb9cdf9
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous external URIs and links to compromised WordPress upload storage, suggesting it functions as a link farm to distribute phishing content or download further malware. The PDF structure and embedded links are consistent with a phishing lure, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9983

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 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.
  • 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://crysiq.ru/uplcv?utm_term=the+only+astrology+book+pdf+free PDF link annotation
    • http://www.kindytennis.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f81715365de---relozotokuboxa.pdfIn PDF document text
    • https://rawoctane.com/uploads/file/7844920297.pdfIn PDF document text
    • http://asirakademi.com/resimler/files/49041666421.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160dfe1750867d---giwawu.pdfIn PDF document text
    • https://mobisteelegypt.net/userfiles/file/70467044039.pdfIn PDF document text
    • http://janaturismointegrato.com/uploads/file/88969682601.pdfIn PDF document text
    • https://ascinfratech.com/clientprojects/trading/file/pujefinomewuxatix.pdfIn PDF document text
    • https://www.actionconstructionjax.com/wp-content/plugins/super-forms/uploads/php/files/5dbe25790b33d1b6013190e370c49acd/padakapuweroko.pdfIn PDF document text
    • http://eros-arena-reutlingen.de/eros/userfiles/file/18886536241.pdfIn PDF document text
    • http://www.mtpartnersfl.com/wp-content/plugins/formcraft/file-upload/server/content/files/161219f53b2cb1---74884574169.pdfIn PDF document text
    • https://www.siemers-deutschmann.de/wp-content/plugins/super-forms/uploads/php/files/uso089ks7sdsi8brciuv9k6704/sufuvofer.pdfIn PDF document text
    • http://socialbomjesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/16072eede63f35---wijepuzowotobevu.pdfIn PDF document text
    • http://taniaandjohn.com/clients/874109/File/bewivano.pdfIn PDF document text
    • https://suacuachuyennghiep.com/uploads/files/luvozejuvanitov.pdfIn PDF document text
    • http://ukwoodrecycling.com/userfiles/files/levijisifivavetixisajoxo.pdfIn PDF document text
    • https://svrcontractors.com/wp-content/plugins/super-forms/uploads/php/files/f14a23ec414eede62f0d32629782504c/sijiwoxiliwezikafuvojidiz.pdfIn PDF document text
    • http://www.northeastmarquees.com/wp-content/plugins/super-forms/uploads/php/files/266c3991d92ea3c32500b51041147f89/84075198402.pdfIn PDF document text
    • https://oneremote.ru/wp-content/plugins/super-forms/uploads/php/files/e3c902dc5f4c84114ef1af7f7934caac/47953063463.pdfIn PDF document text
    • http://hollandunitedreunion.com/clients/5/52/52f3fdf721cdccceb566e47094f1d9de/File/30205050592.pdfIn PDF document text
    • http://www.sunarozlem.com.tr/wp-content/plugins/super-forms/uploads/php/files/bd2tg2qft9o1gbj3tfs6r2quk1/tadebusejabevudebajusezam.pdfIn PDF document text
    • http://biomisszio.hu/tmp/35170938582.pdfIn PDF document text
    • http://www.logistiekverbeteren.nl/ckfinder/userfiles/files/topanuxakanos.pdfIn PDF document text
    • https://myphi.biz/nbloom/fckuploads/file/57314951566.pdfIn PDF document text
    • https://ranagro.com/files/19494437109.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e54c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE54C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fd63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD63 10992 bytes
SHA-256: dbb14d23528f59e128fb2761c27ebc0f469c7b8420b24a29789b455b64c6c674
font_02_sfnt_off00011685.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11685 16816 bytes
SHA-256: 54435b02ab58fd596d28fb4dd480634f5e4e239e870eae6138c4f793a9d35ba0

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