Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d72554515951aec…

MALICIOUS

PDF

92.2 KB Created: 2021-03-17 19:38:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: ff529809bb418103b1cd878dd911f0db SHA-1: ad44fd43bbb85ccca47453993a9a538d3136e5d7 SHA-256: 3d72554515951aecf622fdde1f38d4b553f8bfdb4cfb7953c4d765d5d8ec2b27
194 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It contains a large number of external links, indicating it functions as a link farm. The presence of URLs like https://mezovuduw.ru/wix?keyword=the+maze+runner+free+pdf+download suggests a potential lure for users searching for specific content, which could be a phishing or malware distribution tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://mezovuduw.ru/wix?keyword=the+maze+runner+free+pdf+download PDF link annotation
    • https://lejumapufa.weebly.com/uploads/1/3/4/6/134688193/9523879.pdfIn PDF document text
    • https://xuxijoma.weebly.com/uploads/1/3/3/9/133997678/33399.pdfIn PDF document text
    • https://jabipiduluw.weebly.com/uploads/1/3/4/6/134662585/9316cf.pdfIn PDF document text
    • https://judexesadizit.weebly.com/uploads/1/3/0/7/130738912/1134943.pdfIn PDF document text
    • http://nout-prodat.site/droopy_s_guide_to_the_cartoon_networkoj5ws.pdfIn PDF document text
    • http://topcreditmonitoring.info/apeman_4k_manual20ecl.pdfIn PDF document text
    • https://nagudunegotup.weebly.com/uploads/1/3/2/6/132681409/savox.pdfIn PDF document text
    • https://jejipabiximi.weebly.com/uploads/1/3/2/7/132741556/3559952.pdfIn PDF document text
    • http://raftgjgr.space/larumafopavupevozamotigxcho4.pdfIn PDF document text
    • http://skidki-day.site/turtle_beach_x12_dss2_setup96bdz.pdfIn PDF document text
    • http://arendagg.xyz/17957709913pzqqi.pdfIn PDF document text
    • https://bopilopuneliniw.weebly.com/uploads/1/3/5/3/135304065/33518c1eb03ac55.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://46d16763-6c5f-4e19-aa2c-3f4071fcbec2.filesusr.com/ugd/26f730_8114b912174148519a74c95d908fc2f6.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kefiperizonofu/does_god_want_us_to_read_the_book_of_enoch.pdfIn PDF document text
    • https://30cc9e9c-6145-4029-bfdc-d0561bdb3a10.filesusr.com/ugd/0dcf4b_572cfe308137416a8ea0a3f62ec5698d.pdf?index=trueIn PDF document text
    • https://2e907eb7-0cdb-46e5-a4de-ff0e34d1b96e.filesusr.com/ugd/7ea2c5_dc1f9c6043504113be0d83ecdfc40e96.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/e385fd45-efa5-4fb9-9cc8-ead7537f2abd/xasakegovobebojefod.pdfIn PDF document text
    • https://1cf095b7-1d29-4152-b82c-7733cf7ba0c7.filesusr.com/ugd/c1de29_72de7c292c6f4a268574ea3752abfb37.pdf?index=trueIn PDF document text
    • https://592908bf-dd96-48cc-88d9-ffebbdd10d84.filesusr.com/ugd/f34823_1055e7f1c97944279574213b80f2ddc9.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/patilawasu/41767663812.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dcd62b05-d289-4705-8e75-3a936e9c7f5f/jajavudoba.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011d31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D31 11516 bytes
SHA-256: 239269d41527a97e6f514d50325be370ce63ba779445f7c226de9ed8e7817b99
font_01_sfnt_off000143f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x143F8 5124 bytes
SHA-256: f06efee0a91be0eb7a08812b954fb468d94bbe56d8fa0264edfa56e81db058d1
font_02_sfnt_off00015578.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15578 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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