Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a2a7def6d3d69c8…

MALICIOUS

PDF

256.3 KB Created: 2021-06-14 15:15:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: c83b9d603715b0570c6f8b3a04508ff1 SHA-1: c9bf91738cea56a1778da1094583c62d5f52242a SHA-256: 0a2a7def6d3d69c871f5cb042192024ee5c4223942e71bc79f20357149a2ced8
126 Risk Score

Malware Insights

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

The PDF document contains multiple external links, including one to 'garglob.ru', which is likely part of a phishing or malware distribution scheme. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically related to phishing. The document's structure and embedded links suggest it is designed to redirect users to compromised websites, potentially for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9943

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.
  • 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://garglob.ru/uplcv?utm_term=reading+comprehension+for+elementary PDF link annotation
    • https://www.getfitcrew.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2a56b95d0b---xigugumixapolinaboxo.pdfIn PDF document text
    • https://fajanav.com/aym_image/files/fabujox.pdfIn PDF document text
    • http://beulahcooleycollection.com/clients/870349/File/vuruparojosutufuzalatad.pdfIn PDF document text
    • https://primax.fr/wp-content/plugins/super-forms/uploads/php/files/ga2pibt0slol6itjmshlin5gq2/nuvaxa.pdfIn PDF document text
    • https://autosaloncenter.com/uploads/file/94343106313.pdfIn PDF document text
    • https://www.cibaospalaser.com/wp-content/plugins/super-forms/uploads/php/files/1q39lgetvlbmam3ivhtshu6ltm/58494845330.pdfIn PDF document text
    • https://postscriptproductions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bc8cf434355---besivejig.pdfIn PDF document text
    • http://mas.vacations/wp-content/plugins/formcraft/file-upload/server/content/files/1609e38cabc239---dexowi.pdfIn PDF document text
    • http://www.mvdisposal.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c2c7fb35ad9---65795941649.pdfIn PDF document text
    • https://championsforchildren.org/wp-content/plugins/super-forms/uploads/php/files/23d929c3e823c00e38823d6c6382943e/32851076158.pdfIn PDF document text
    • http://tasteofruraleurope.eu/upload/File/figugaxixow.pdfIn PDF document text
    • https://www.escon.it/wp-content/plugins/super-forms/uploads/php/files/c76286df35abe81b31c375aaafb41daa/sadawiwezuren.pdfIn PDF document text
    • http://df-foundry.net/d/files/2526587366.pdfIn PDF document text
    • http://comicpapyrus.com/wp-content/plugins/super-forms/uploads/php/files/392254eb566cbb79301e04ebe9e86cdf/5667003521.pdfIn PDF document text
    • https://travelselection.us/wp-content/plugins/formcraft/file-upload/server/content/files/160793c8d5ae3e---lisew.pdfIn PDF document text
    • https://vildmarksjagt.dk/userfiles/file/putew.pdfIn PDF document text
    • http://www.nomorcantikspesial.com/file/duvawijad.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00038ba7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x38BA7 4592 bytes
SHA-256: 08df57fcf7f1e72d6dad8b33896fc0d0e639b86807f70c9954930729c22e3ecf
font_01_sfnt_off00039bbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x39BBB 5680 bytes
SHA-256: d956abf85f86fe69c6314683dfbe509c242c250c7d6c1ede6044c4d54970afca
font_02_sfnt_off0003aefe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3AEFE 13964 bytes
SHA-256: 6bf3e32f8f646044986625d3353adbc46d81b8d8765fad9665f0af150b4de724
font_03_sfnt_off0003dc02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3DC02 16060 bytes
SHA-256: d1a84ba8f0e4a827a048d387db8dd5dae3538f1c7e72415b16af587a9947cdc7