Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e0cd35045c456a0…

MALICIOUS

PDF

89.0 KB Created: 2021-07-23 11:06:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: 3d5468cb2363cc27f719d1c63be6d829 SHA-1: 7dd5dc707f09ed71759b6faf489b89ac87d5505e SHA-256: 3e0cd35045c456a0aca7c57a80a3a9b81bb887a642ffc4948a0a87ce1bf1d98b
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was detected as malicious by ClamAV and an ML classifier. The 'SE_CLICKFIX' heuristic indicates it's a social engineering attack designed to trick the user into running a command, likely to download and execute a second-stage payload. The document body was unreadable, but the presence of numerous external links, many pointing to compromised CMS uploads or disposable hosting, supports the phishing and payload delivery intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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://tortugafilms.ca/adminfiles/file/lesamajekoto.pdf In PDF document text
    • https://rclurie.com/wp-content/plugins/super-forms/uploads/php/files/fd8f4a30dff5299e4319be99da0b4bac/52121711100.pdfIn PDF document text
    • http://multifamilyfoundation.org/clients/3/38/38c33163524538bb895552046de0b362/File/patopusilazimowamo.pdfIn PDF document text
    • http://studiomanzetti.it/userfiles/files/pipuponazitod.pdfIn PDF document text
    • https://hmjrgoldhockey.org/wp-content/plugins/super-forms/uploads/php/files/b83283d967ae3885fae4b79688b876a0/63289815894.pdfIn PDF document text
    • https://purefeeling8.com/data/file/67771638121.pdfIn PDF document text
    • https://techson-cctv.com/upload/file/43026190647.pdfIn PDF document text
    • http://broeinest.org/ckfinder/userfiles/files/82839789658.pdfIn PDF document text
    • https://www.pfgpartners.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607587d697478---65859676292.pdfIn PDF document text
    • https://efsanepin.com/calisma2/files/uploads/wosigojosemelovipujado.pdfIn PDF document text
    • https://ksuskalology.com/images/file/mofoxoxuvilibemavoxe.pdfIn PDF document text
    • https://www.popcaffe.it/wp-content/plugins/super-forms/uploads/php/files/ad8c8213543c398827b5e648d6a5d8f4/34804393186.pdfIn PDF document text
    • http://traditionsradio.com/wp-content/plugins/super-forms/uploads/php/files/68c3ddea6b286e0cdb689b0ce1ac0e40/kebifinujeziwozuj.pdfIn PDF document text
    • http://cityclick.it/userfiles/files/13396654734.pdfIn PDF document text
    • http://skup-laptopow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080c87b47d70---dowerokemakako.pdfIn PDF document text
    • https://area5srl.it/file/bixenoxewulakujafa.pdfIn PDF document text
    • https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/raa8f06epl7ep60irjp09f6dd0/94382520475.pdfIn PDF document text
    • https://dispomydeal.com/wp-content/plugins/super-forms/uploads/php/files/00e79133dc1ceb0e76d3b9a2dc96776d/10659154414.pdfIn PDF document text
    • http://www.ibadirect.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608963cab28ca---kodezo.pdfIn PDF document text
    • http://www.absolutecateringla.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083388fada75---17626808206.pdfIn PDF document text
    • http://ranaghatpchsschool.org/userfiles/file/81693513782.pdfIn PDF document text
    • https://bettenbaehren.de/wp-content/plugins/formcraft/file-upload/server/content/files/16079594ce6d38---46770499244.pdfIn PDF document text
    • http://www.vivelamusica.es/wp-content/plugins/formcraft/file-upload/server/content/files/160a3042e1b372---tegebazorupimemepibasigem.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=shortcut+for+refresh+in+windows+10PDF link annotation
    • 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_off0000f83c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF83C 16884 bytes
SHA-256: da65b64d9bf4f84d338b6cc11d34912888c767ba0bc6d5095ce86904cc09ce39
font_01_sfnt_off00012443.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12443 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00013c5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C5A 10800 bytes
SHA-256: d52a9e8b04ec522d4b7b69d8042a6aaf7ba8038e73e620245e3f845494752f16

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