Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8212377b0718f05…

MALICIOUS

PDF

81.6 KB Created: 2021-09-18 03:22:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 8a3553999b166c396f2edda89ea0da10 SHA-1: 049d2eb00b934ace8f970dfc14a26e31faed41a7 SHA-256: e8212377b0718f0533231215e7e7f74dcb0d9eb7f7b164d38547bd11975e7ce7
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and an ML classifier as malicious, with ClamAV detecting it as a phishing trojan. It contains numerous external links, many hosted on compromised WordPress sites or disposable domains, suggesting a link farm or phishing lure. The presence of embedded JavaScript, though not fully analyzed due to obfuscation, indicates potential for malicious actions like downloading further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

Heuristics 6

  • 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
  • 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=nintendo+ds+lite+roms PDF link annotation
    • https://volnynaklad.cz/data/file/83658323162.pdfIn PDF document text
    • http://air-con.ru/upload/files/96071045510.pdfIn PDF document text
    • https://nceptionsolutions.com/wp-content/plugins/super-forms/uploads/php/files/62668aab87f7e3b60e3eea13293e72be/71967434350.pdfIn PDF document text
    • http://hotelpenza58.ru/ckfinder/userfiles/files/xugepodomirag.pdfIn PDF document text
    • https://backcountryplayground.com/wp-content/plugins/super-forms/uploads/php/files/3830a0d475893d3fba8375a87d6f7ef5/rejaresaf.pdfIn PDF document text
    • https://pikhospital.com/ck_uploads/uploads/files/vubusuvuripuvimewifi.pdfIn PDF document text
    • https://www.lamuccacompany.com/wp-content/plugins/super-forms/uploads/php/files/aa1e5f016510faf030c78b1bd3991b58/19621476778.pdfIn PDF document text
    • https://www.sabiamente.es/wp-content/plugins/formcraft/file-upload/server/content/files/1613d4dc0b0fc4---86091090391.pdfIn PDF document text
    • https://phucatgarment.com.vn/ckfinder/userfiles/files/21634833927.pdfIn PDF document text
    • https://synersys.fr/contenu/file/pemuzadutoji.pdfIn PDF document text
    • https://pluviaterra.mx/wp-content/plugins/super-forms/uploads/php/files/115444a8c63d5cda761ee520cfde3d1c/zozigugapezopida.pdfIn PDF document text
    • http://feg.vn/uploads/files/sewodanesu.pdfIn PDF document text
    • http://ore-processing.ru/d/files/71654119578.pdfIn PDF document text
    • http://watch62.ru/files/files/53232837094.pdfIn PDF document text
    • http://poultech.net/d/files/pesefelokexalanafaw.pdfIn PDF document text
    • http://hndgyl.com/v15/Upload/file/20219101749459890.pdfIn PDF document text
    • http://heizler.hu/files/file/tejibuliretelaxusol.pdfIn PDF document text
    • http://agedwedfjtj.pretty-match.com/upload/files/34580485418.pdfIn PDF document text
    • https://predial-rua-nova.pt/056-CovadaLua/images-editor/file/vesavex.pdfIn PDF document text
    • http://www.workbythai.com/admin/assets/images/46742460171.pdfIn PDF document text
    • http://droneducational.com/admin/userfiles/file/66283700008.pdfIn PDF document text
    • https://dienlanhhonganh.com/images/pic/file/minuba.pdfIn PDF document text
    • http://travelshops.pl/userfiles/file/33548759850.pdfIn PDF document text
    • https://www.gryf-wet.pl/ckfinder/userfiles/files/fuxusa.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_off0000db49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB49 10224 bytes
SHA-256: 0618967329af683781084ac6a35a3d4728a10d5ce2a850fbb2d12631c0130cdc
font_01_sfnt_off0000f22b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF22B 18052 bytes
SHA-256: 07e8118b346acec13bc676e092c62e5ae8f804ced21330bb202a48da2530c77b
font_02_sfnt_off00012126.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12126 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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