Malicious PDF — malware analysis report

Static analysis result for SHA-256 17f0f6a2b44e1f79…

MALICIOUS

PDF

77.9 KB Created: 2021-09-06 18:58:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: ea726f65190e3edd9f6353070affe3c4 SHA-1: e49222f9b92e0e05f834920e41983608f403b11d SHA-256: 17f0f6a2b44e1f79be568e857584c5b772a1a702e97eb9f6625d926ca1c799d2
156 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous links to external websites, many hosted on compromised WordPress installations, suggesting a link farm or phishing lure. The presence of embedded URLs and the overall structure point towards an attempt to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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://irlanc.ru/uplcv?utm_term=duralast+8+amp+battery+charger+manual PDF link annotation
    • https://deewo.de/wp-content/plugins/formcraft/file-upload/server/content/files/16087efe80fed5---dosukevijezox.pdfIn PDF document text
    • https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/9d40855fca69a0be47db5ee892041dbf/52892557511.pdfIn PDF document text
    • https://evenimentecastel.ro/wp-content/plugins/super-forms/uploads/php/files/s40p8b5dmja9omvqtjop1n5v4s/62356153405.pdfIn PDF document text
    • http://phutungtdc.com/upload/files/xuxizorudaliwipu.pdfIn PDF document text
    • https://erdenetpost.mn/userfiles/files/84494426892.pdfIn PDF document text
    • https://akapacha.com/userfiles/file/23878169967.pdfIn PDF document text
    • http://2478.ru/admin/ckfinder/userfiles/files/24208709460.pdfIn PDF document text
    • http://sdds.be/userfiles/file/riwelofipofifez.pdfIn PDF document text
    • https://www.sacda.org/wp-content/plugins/super-forms/uploads/php/files/a5b6lvu5l4lmu24f345t0h3to6/milaxotakubudegonefepab.pdfIn PDF document text
    • http://www.birapart.com/wp-content/plugins/formcraft/file-upload/server/content/files/160940cdd16f81---levonetesuzekoguparitusaj.pdfIn PDF document text
    • http://vipnjl.com/userfiles/files/11572240100.pdfIn PDF document text
    • http://kehlux.lu/userfiles/files/86508902274.pdfIn PDF document text
    • http://jun-travel.com/userfiles/file/22548913578.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c83ce65094---9016246091.pdfIn PDF document text
    • http://subventionsbetrug.de/wp-content/plugins/super-forms/uploads/php/files/971h2kl6e0k0qskjn6ta8mpu92/70455899841.pdfIn PDF document text
    • https://hacunamatata.ru/wp-content/plugins/super-forms/uploads/php/files/a64384283910461a0902a9ccc2e236f6/42535622003.pdfIn PDF document text
    • https://binarbaidequipment.com/public_html/userfiles/file/93310101630.pdfIn PDF document text
    • https://aarhuskortet.dk/images/file/dusorexuriranu.pdfIn PDF document text
    • https://snoman.mb.ca/ckfinder/userfiles/files/99896222025.pdfIn PDF document text
    • http://matrixuniverzum.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16071c90d16e94---wobukuvixoxakazidima.pdfIn PDF document text
    • http://www.koeru.eu/failid/file/jofagewe.pdfIn PDF document text
    • https://regalcabs.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16087668d7659c---vunikupevibowadowipidap.pdfIn PDF document text
    • http://www.musicmaestrodiscos.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160c7248363f2b---temobepoge.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cb78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB78 17248 bytes
SHA-256: 73cb0373381d66d13e83082a94090126bb8e94e4b1499a8bcabd0ad846cebde5
font_01_sfnt_off0000f832.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF832 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011049.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11049 11172 bytes
SHA-256: ebb0b019a84360f7f18909f80d5ce9d44a4ce32740cbb1f2a060f226a51010df

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