Malicious PDF — malware analysis report

Static analysis result for SHA-256 208c47ce67a41589…

MALICIOUS

PDF

79.5 KB Created: 2021-07-04 10:22:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: bb035bd403639cb3a5a29715bd50719a SHA-1: 2418f7cc297125eaae57c8379e47f2f2cb4d51b5 SHA-256: 208c47ce67a415896fb666ccba72a54fd3297bcd37a66c413e26f7f82728b29a
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The file functions as a link farm, containing numerous URLs that point to potentially compromised websites or disposable hosting. The presence of URLs like 'http://a-range.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1607f79b72e5ec---wubimogaguvijakalofad.pdf' suggests an attempt to leverage compromised infrastructure for distributing malicious content or phishing lures. No scripts were extracted, but the structure and URL patterns are consistent with phishing or malware delivery campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

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://pistant.ru/uplcv?utm_term=anger+thermometer+pdf+printable PDF link annotation
    • http://bloomx.com/sites/all/sites/bloomx.com/files/98707708904.pdfIn PDF document text
    • http://aimic.com/userfiles/file/62009038839.pdfIn PDF document text
    • https://www.sussexweddingservices.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16099d10be8907---sujofowodex.pdfIn PDF document text
    • http://beergolfers.com/blog/images/file/90200355928.pdfIn PDF document text
    • http://orderleesushi.com/uploads/files/37511294491.pdfIn PDF document text
    • https://prikolnaya.com/wp-content/plugins/super-forms/uploads/php/files/33e36a516ce4f47ca6844568f5ff9ab2/3823463632.pdfIn PDF document text
    • http://stl-hk.net/userfiles/20101077165.pdfIn PDF document text
    • http://elenasteele.com/wp-content/plugins/formcraft/file-upload/server/content/files/160722fb4ea5fe---12247183924.pdfIn PDF document text
    • https://oneremote.ru/wp-content/plugins/super-forms/uploads/php/files/a276208d68633a11af85f50e93bf8004/poziriwesamuritemowupeka.pdfIn PDF document text
    • http://esistore.be/userfiles/file/37818411014.pdfIn PDF document text
    • http://bhsclassof70.com/clients/a/ac/acf0241a72c9eb28a719a759cf8a4748/File/67933122784.pdfIn PDF document text
    • http://allegroescrow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160be781f1edbd---rebujodonosamimevaz.pdfIn PDF document text
    • https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/8890d8f9bbb7a3de9f1c91f39ae885fb/13100185121.pdfIn PDF document text
    • http://bawaconstructions.com/editorData/file/95987308369.pdfIn PDF document text
    • https://bikinibody.be/wp-content/plugins/super-forms/uploads/php/files/5vdvpg92sspgqb13rkqikhsrhj/gumozipifegalukakavede.pdfIn PDF document text
    • https://protradingindia.net/userfiles/file/40241166316.pdfIn PDF document text
    • http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/2c17d60320ae0fef653513598a5192f3/16684952578.pdfIn PDF document text
    • https://dedywiredja.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607922c1a534c---nejemirusefotogufedawogiw.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160855b187ae14---vixaved.pdfIn PDF document text
    • http://canphantich.net/Images_upload/files/91585585770.pdfIn PDF document text
    • http://beergolfers.com/blog/images/file/gixopejarugulip.pdfIn PDF document text
    • https://rlvanstory.com/wp-content/plugins/super-forms/uploads/php/files/997d8758dc2f3b4c444940de569a262d/80400732650.pdfIn PDF document text
    • http://1975geegees.com/clients/78603/File/38784635037.pdfIn PDF document text
    • http://a-range.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1607f79b72e5ec---wubimogaguvijakalofad.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_off0000d60c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD60C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ee1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE1E 16344 bytes
SHA-256: 68b4b3d724079fe8dd19b4282d0677a494e5e80484603b8bce8dac23d6069dbf
font_02_sfnt_off00011851.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11851 10900 bytes
SHA-256: b0d7c9b48883ea7f9eb07c01c98344aabd9f7dd389d96be7c1b422cf4d33caa2

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