Malicious PDF — malware analysis report

Static analysis result for SHA-256 7268e98c0e5fb41e…

MALICIOUS

PDF

92.1 KB Created: 2021-06-27 00:54:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 1c6d3d800999b7d445f8c01d27b52332 SHA-1: f7ec9a1d407ee6f6886f239152408e43e8462d08 SHA-256: 7268e98c0e5fb41e5f9512159f242a734dfcf67bde7baf141e1545a287127be7
156 Risk Score

Malware Insights

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

The sample was detected by ClamAV as Pdf.Phishing.Trojan and flagged by an ML classifier, indicating malicious intent. Heuristics identified it as a link farm pointing to compromised CMS uploads and disposable hosting, suggesting a phishing or malware distribution scheme. The embedded URLs, such as http://3handseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/160742be6b85d8---delitelegokogujerorif.pdf, are likely used to lure victims to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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://www.marthatrotts.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160c497c21e09f---76246580660.pdf
    • http://charugarware.com/DEVELOPMENT/charu_garware/uploaded/userfiles/file/17974343801.pdf
    • https://kachhiproperties.com/wp-content/plugins/super-forms/uploads/php/files/rgsb6t930a7u7buspj8jlagja4/4930193794.pdf
    • https://aprilboya.com/userfiles/file/kimanepug.pdf
    • http://www.a-fairys-choice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aad1a05d899---87390085758.pdf
    • https://www.visitrwanda.com/wp-content/plugins/super-forms/uploads/php/files/0873765232e92941eb1b178e70357a54/42777773986.pdf
    • https://ahi.com.ua/wp-content/plugins/super-forms/uploads/php/files/97ea0dcfee764ea454728c4614c2b1b6/99126938745.pdf
    • http://creativeindustries.ru/uploads/userfiles/file/84358732188.pdf
    • https://www.webplease.it/wp-content/plugins/super-forms/uploads/php/files/mbjf0838ii7tcbeqat2949kp86/jenakimirarosimodirifikuv.pdf
    • http://thietbixanh.net/uploads/files/25525360742.pdf
    • https://rockyshairsalon.com/wp-content/plugins/super-forms/uploads/php/files/mukc2usvmhl81n7k3qfum3tn3o/kokuwokitupug.pdf
    • http://robertfeinberglaw.com/images/edit_images/file/65675962068.pdf
    • http://dr-onesrl.com/userfiles/files/73400385434.pdf
    • http://3handseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/160742be6b85d8---delitelegokogujerorif.pdf
    • http://xn--80aaffebba2apgigwiiececnggk9e4k.xn--p1ai/pict/file/44757257448.pdf
    • https://dazzlin.co.uk/wp-content/plugins/super-forms/uploads/php/files/3bb9816158808d47fb58f76251afd4f1/vapitemevo.pdf
    • https://kuechentreff-schmid.de/wp-content/plugins/super-forms/uploads/php/files/ohgqqsnnojiduamhl8tef2ibtn/67869291082.pdf
    • http://www.medical-psychology.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160b4b8c14b861---80837292088.pdf
    • https://www.travelticket.com.au/wp-content/plugins/super-forms/uploads/php/files/cbnghv5hi6u4b2nnbs743970br/mewogemosefuzakiwutev.pdf
    • http://totalfinance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160adb9b6cd09e---dikidenakalabesavezewemib.pdf
    • https://akarchlight.com/wp-content/plugins/super-forms/uploads/php/files/3426a371988b30cd0a35fbd82a224e37/torix.pdf
    • https://kamber.dk/wp-content/plugins/super-forms/uploads/php/files/9398555790ce88da4934b9b0edc7ee71/tifokefatikuj.pdf
    • https://www.charroninc.com/wp-content/plugins/super-forms/uploads/php/files/b08ed8ac02ad1be4a05f947f98f3f83e/lijosexotuwunotesa.pdf
    • https://webhostmurah.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073b73d4a1a4---pibofejidupagufigazezax.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=how+to+get+your+wife+pregnant+faster
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010386.bin
d2b90a1cd97cb80c69d67fddff6c4505e8ea27f05376a550a78714c498d7ccca
pdf-font-stream PDF embedded font (sfnt) at offset 0x10386 17144 bytes
font_01_sfnt_off00013033.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x13033 16792 bytes
font_02_sfnt_off0001484a.bin
b7586add1c543322dd1eefa69dc0f8621d1633e3af5eeb86674c13e00efd2b14
pdf-font-stream PDF embedded font (sfnt) at offset 0x1484A 10776 bytes