Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d6f02b0b7f764dc…

MALICIOUS

PDF

77.1 KB Created: 2021-08-24 07:37:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 088a410a5a09def5af77d7b61a9f6039 SHA-1: 8997bbae7c84fa111ccfa2d55816b3eebec9b92b SHA-256: 2d6f02b0b7f764dc7a6aada558cc7b3b4949dfd3acd086a9c4326415963985db
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or malware distribution intent. It functions as a link farm, with numerous URLs pointing to various websites, some of which are hosted on compromised WordPress upload directories. The presence of 'utm_term=website+redirect+message+examples' in one URL suggests a potential phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

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://crewmak.ru/uplcv?utm_term=website+redirect+message+examples PDF link annotation
    • https://fond.ru/userfiles/file/58984246480.pdfIn PDF document text
    • https://pacpartner.net/images_client//imagesfile/vimesipizig.pdfIn PDF document text
    • http://audiomaster.se/wp-content/plugins/formcraft/file-upload/server/content/files/1607f68e88cf79---38369766636.pdfIn PDF document text
    • https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/d39afd80a739245740d47b939ce5469d/90300572218.pdfIn PDF document text
    • https://www.brightfieldbusinesshub.co.uk/wp-content/plugins/super-forms/uploads/php/files/n9coevs8e1sp4k77vnsh6nin8e/tevupev.pdfIn PDF document text
    • http://progfin.pl/userfiles/file/83653363395.pdfIn PDF document text
    • http://martonaroniskola.net/userfiles/file/liref.pdfIn PDF document text
    • https://stewsites.com/wp-content/plugins/super-forms/uploads/php/files/0792abdd70ddf48b622ab30150a8781e/86526321540.pdfIn PDF document text
    • http://www.x454.com/wp-content/plugins/super-forms/uploads/php/files/edet73dmtov0pgajf7okh6pgu1/60492918038.pdfIn PDF document text
    • https://www.azulejositurry.com/wp-content/plugins/super-forms/uploads/php/files/jpqso8h6ca44dph1q2d2rvegd1/48558391812.pdfIn PDF document text
    • https://www.hit-education.com/wp-content/plugins/super-forms/uploads/php/files/0jo65f7p4c9knaol8m2f081e34/27124729357.pdfIn PDF document text
    • http://moderncarrent.com/user_img/files/tapavodivanakugufusa.pdfIn PDF document text
    • https://bokseinstituttet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160736fc097325---990856358.pdfIn PDF document text
    • http://wittlich-luexem.de/userfiles/file/jalopoxovuranotit.pdfIn PDF document text
    • https://dacoma.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16079011b07027---nutilija.pdfIn PDF document text
    • https://postscriptproductions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160742714ae892---zozapogatutef.pdfIn PDF document text
    • https://sk-developers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c9778637f95---1584869091.pdfIn PDF document text
    • https://centrumschoolka.pl/photos/file/67528261071.pdfIn PDF document text
    • http://www.allatpatikapecs.hu/images/file/sebijela.pdfIn PDF document text
    • https://christianboudreau.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bd63a059afc---20201366974.pdfIn PDF document text
    • https://ladangmimpi2.com/contents//files/86453535122.pdfIn PDF document text
    • https://tootooair.com/FileData/ckfinder/files/20210730_0D3E126ACA6E8F68.pdfIn PDF document text
    • https://g3az.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bb57a0156b---fipibikuvedibupulota.pdfIn PDF document text
    • https://xn--64-mlcufjjaii0l.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/8ab7d94a2ff6d537ec90cd76b9724d73/77690921709.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_off0000c8f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8F1 10868 bytes
SHA-256: 92c578a4c6694e5533fbd75d0a7012c23a5d28a15368398e7441ba18f9f3b72a
font_01_sfnt_off0000e1b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1B6 17148 bytes
SHA-256: 2f169a443c61bd61d4d3baf3a20112874cd555e1c9b2f7058750b77c643492ee
font_02_sfnt_off00010ecd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10ECD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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