Malicious PDF — malware analysis report

Static analysis result for SHA-256 73723db1dc63c60e…

MALICIOUS

PDF

73.4 KB Created: 2021-06-05 16:41:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d2946830a90f350b406e7cf86628c26a SHA-1: f9b8b0ed0e12a0582b3c9a16a3e980697e6375cf SHA-256: 73723db1dc63c60eda54c15f3ad4b58fd0c91453a656f9d0e23a441cf016a6d9
154 Risk Score

Malware Insights

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

The PDF contains numerous links to compromised websites and disposable hosting, suggesting a phishing or malware distribution campaign. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded URLs and link farm structure are designed to redirect users to potentially harmful content, likely for credential harvesting or second-stage payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9741

Heuristics 5

  • 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
  • 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://coretry.ru/uplcv?utm_term=being+17+english+subtitles+dailymotion
    • https://aedwea.com/upload/foto/wojipibuvezefez.pdf
    • https://www.alphaveneers.com/wp-content/plugins/super-forms/uploads/php/files/c2cb400cf99bd0439ce82bcc16b218f5/40312028210.pdf
    • https://www.bouwenaaneensterkwerkgeversmerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16090e9ff4c318---moxofoxefodokoreta.pdf
    • http://aldara-latinoamerica.com/userfiles/file/60805029184.pdf
    • http://drinkandshrink.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16072d630ac5dd---pifiruzisolixizabo.pdf
    • https://encouragingmath.com/wp-content/plugins/super-forms/uploads/php/files/42964daf0c94b92b1d74b3a5d13ddb86/norelabefepamatokili.pdf
    • https://uniontend.com/userfiles/files/vulunitakipavomigupufe.pdf
    • http://www.bewegeninarnhem.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a364c9ab034---54790027993.pdf
    • http://www.playerclub.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16078d792cbfa3---vunabo.pdf
    • https://slide-bearing.com/d/files/1257811064.pdf
    • https://coachtourbusrental.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a14248e247f---rovip.pdf
    • http://ar-intl.net/wp-content/plugins/super-forms/uploads/php/files/94g8r94qejivchgf62qqqcni75/56025631400.pdf
    • https://www.hadlowsecurityshutters.com/wp-content/plugins/super-forms/uploads/php/files/01f3c3edd2aa9c89cfc3b594fa2705c6/41687041802.pdf
    • https://baodinhsolar.com/wp-content/plugins/super-forms/uploads/php/files/0489puptga6kl0pv3bt35hkssv/13680572438.pdf
    • http://www.theflightfest.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a8542d96def---1542433520.pdf
    • https://deewo.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b54d1d4ac6b---1368094782.pdf
    • https://www.scanworld.se/wp-content/plugins/formcraft/file-upload/server/content/files/160b47b2949f3d---bumagojugen.pdf
    • http://siembra.me/uploads/files/bazanutifemodowukipoja.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.opentle.org
    • http://scripts.sil.org/OFL
    • http://www.gnu.org/licenses/gpl.html

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000df75.bin
5cf7e9c2746739c73fb9b141373b5f5b4cb231b6c1386713e5f5c56faeb2adb5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDF75 5564 bytes
font_01_sfnt_off0000f24e.bin
0b38f6fd5e0b54bfa22d5adee1cfe00629fe134100fc7cfc1ad14a2ab7974207		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF24E 6148 bytes
font_02_sfnt_off0001022e.bin
bf9f38b35440817d56886c90d068152eb5f55cbdf07a30729a535c7c2f01079c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1022E 11120 bytes

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