Malicious PDF — malware analysis report

Static analysis result for SHA-256 07de01df6df68d25…

MALICIOUS

PDF

85.0 KB Created: 2021-07-03 14:31:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: a6276e4044d3c0e31867b88d4bd2dfc2 SHA-1: 2ec6da1369a4ee04bf44870dfa8ad2ff4bbf0ba1 SHA-256: 07de01df6df68d25f2f45b9dd5f45d4fd81b6ee3f66abbcb4c9d5cf3921e9767
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and an ML classifier as malicious, with ClamAV identifying it as a phishing trojan. The document contains a large number of embedded URLs, many pointing to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The document body itself is heavily obfuscated and unreadable, providing no direct textual clues to its purpose beyond what is inferred from the embedded links and heuristic findings.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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://laborke.ru/uplcv?utm_term=hens+that+lay+blue+eggs PDF link annotation
    • https://sketchup360.vn/wp-content/plugins/super-forms/uploads/php/files/nm3g8c8kq4pbloa9jntdujg8aa/12156837946.pdfIn PDF document text
    • https://amalighting.com/wp-content/plugins/super-forms/uploads/php/files/cd7394cb0cc71c02ed5a439115a40e08/dokoxovejelilitapazekeka.pdfIn PDF document text
    • http://vienkiemis.lt/app/webroot/uploads/userfiles/files/11117552771.pdfIn PDF document text
    • https://larrialdiak.es/files/galeria/files/wefuwajege.pdfIn PDF document text
    • https://thejinglelab.com/wp-content/plugins/super-forms/uploads/php/files/vl55fsbp73on1svupgqt7vth5l/40226186768.pdfIn PDF document text
    • http://kino-profi.com/wp-content/plugins/super-forms/uploads/php/files/6f59505b9ec38603298359525fe6d51f/merazasugafeguwoxeju.pdfIn PDF document text
    • https://autotrilogy.com/wp-content/plugins/super-forms/uploads/php/files/06b9ee4d9277184f85eedefc7271ddde/1024117931.pdfIn PDF document text
    • http://koryosushi.com/uploads/files/23847275954.pdfIn PDF document text
    • http://atya.eu/files/file/26093098996.pdfIn PDF document text
    • http://www.birapart.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bfe7b703edd---tenaxapopafakanebexidonax.pdfIn PDF document text
    • https://smilepath.com.au/wp-content/plugins/super-forms/uploads/php/files/52ca21db0ddf51c2b900a09a3317c33a/37698853023.pdfIn PDF document text
    • http://cricalliance.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083e1f15930e---58294614907.pdfIn PDF document text
    • http://webcertain.net/contentupload/fckeditorUploads/organization_/file/rinimotetopilabut.pdfIn PDF document text
    • https://kuechentreff-schmid.de/wp-content/plugins/super-forms/uploads/php/files/m3itbn630j397grft17dnc6jh0/suruvamugebakamaj.pdfIn PDF document text
    • https://miet.hu/kepek/dojazarizutezozudupe.pdfIn PDF document text
    • https://atlastoursntravels.com/userfiles/file/32986161641.pdfIn PDF document text
    • https://www.harnoordesigns.com/wp-content/plugins/super-forms/uploads/php/files/vfvvg2heu08topci5qagrctfq7/20707958572.pdfIn PDF document text
    • https://eyetracking.pl/userfiles/file/40349386645.pdfIn PDF document text
    • https://buddingheights.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609f0e0b8b29e---20441217657.pdfIn PDF document text
    • https://globalclassic.org/wp-content/plugins/super-forms/uploads/php/files/3h2q5a721rn4prkv9313i2knad/delivitu.pdfIn PDF document text
    • https://quangcaowebsite.vn/uploads/files/banafumezapumeveponi.pdfIn PDF document text
    • https://afriqueitnews.com/wp-content/plugins/super-forms/uploads/php/files/78dff272c533e03070448a142b28bf92/liwote.pdfIn PDF document text
    • http://kingcraftviet.com/uploads/ckfinder/files/fodupuxu.pdfIn PDF document text
    • http://phillipwhiting.com/wp-content/plugins/formcraft/file-upload/server/content/files/160792d0664f3a---zasitapodudalavezenumup.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_off0000ec4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC4F 10420 bytes
SHA-256: 0b62201bcb069e3a2763f5c1ebd62b23a618c0664cf5b86ab6a16ea9f443640a
font_01_sfnt_off000103e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103E1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011bf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BF3 16684 bytes
SHA-256: f45f1b351a7b143392b24d20c4ab7f07c82c22a6a59b512c02152eaf6756ee9a

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