Malicious PDF — malware analysis report

Static analysis result for SHA-256 e00a10f48c8e9025…

MALICIOUS

PDF

67.8 KB Created: 2021-09-05 23:26:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-07
MD5: 614e67d8e8173d40587c0336cf8548b0 SHA-1: 684cbf44410bba3bf1ae276c62a689ff933a9b47 SHA-256: e00a10f48c8e90255adbc9d073ac76b953f3a532a14605dcd9b26e3b0dab5a02
154 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a link farm. It contains numerous URLs pointing to compromised CMS upload directories, suggesting an attempt to lure users to malicious or phishing sites. The presence of multiple distinct hosts and the use of UTM parameters in some URLs further support this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6872

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://infrive.ru/uplcv?utm_term=generate+pdf+c%23+open+source PDF link annotation
    • https://wholisticvibrations.com/wp-content/plugins/super-forms/uploads/php/files/f195ef4ad973ee160005897ba51f5215/nipoxumagovozineladefajot.pdfIn PDF document text
    • http://yule-sign.com/upload/editor/file/20210703152856.pdfIn PDF document text
    • https://bluetact.com/locktactyuma/userfiles/file/tulimasufikiwofinofub.pdfIn PDF document text
    • https://fotofidelity.cz/userfiles/file/50109138169.pdfIn PDF document text
    • http://www.holderit.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8e26a05b4c---59718906870.pdfIn PDF document text
    • https://grafitpoint.ru/wp-content/plugins/super-forms/uploads/php/files/795c9e1671470bdaad6ed13a0e2d5d9f/ruranezudelo.pdfIn PDF document text
    • https://drproperty.in/userfiles/file/wekuvevekab.pdfIn PDF document text
    • https://morabia.fi/images/file/dufageve.pdfIn PDF document text
    • http://accessprecision.com/userfiles/file/96000008759.pdfIn PDF document text
    • https://deewo.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606fccd29a834---62633005759.pdfIn PDF document text
    • https://creationstationdance.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ee24793f1a---57785512004.pdfIn PDF document text
    • http://cyklo-sport-servis.cz/UserFiles/File/93343170592.pdfIn PDF document text
    • https://flvirginia.com/wp-content/plugins/super-forms/uploads/php/files/369bea2e0f66ecb894e8f91558a30954/mebizolefejukirapala.pdfIn PDF document text
    • http://aire-limpio.com/img/editor/file/fifaki.pdfIn PDF document text
    • http://rideco.hu/upload/file/nifowigovivufulubaxowilul.pdfIn PDF document text
    • http://bascobrunswick.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1608b2ae781008---4521402466.pdfIn PDF document text
    • http://skrabl.pl/www/rpbd/fck/file/19686164879.pdfIn PDF document text
    • http://scissortailfarms.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c26277ebfcf---liwotak.pdfIn PDF document text
    • http://bnblspecialities.com/userfiles/files/47604631535.pdfIn PDF document text
    • https://inchirierielicopter.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1609fb803a03f3---95029891415.pdfIn PDF document text
    • http://brainbond.ro/userfiles/file/gobizelufimuravoxusaxiwi.pdfIn PDF document text
    • http://ticaproduce.com/ckfinder/userfiles/files/64550573237.pdfIn PDF document text
    • https://www.isgs.org/wp-content/plugins/super-forms/uploads/php/files/dbd66a3b1cb585e171b63a58fc72e1ad/fuzejafalawaxugexejapabe.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c660.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC660 10228 bytes
SHA-256: 8b3486544ca59b2e3c34c6d8734a7f8523e3fcf438022c018bfe96f77fc28aa3
font_01_sfnt_off0000dd75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD75 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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