Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0d87666d9ec78af…

MALICIOUS

PDF

59.4 KB Created: 2020-12-19 17:40:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aec170153d24925e3b49738836b8f026 SHA-1: 7785a254049928e373e9622b48baa46361153141 SHA-256: f0d87666d9ec78af28e499e884cdb2c015e4d76e2c9a3969669d6b398a276c24
214 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with at least one identified as a malicious redirector. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. No scripts were extracted, but the document structure itself is designed to lure users to external, potentially harmful, sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://ggtraff.ru/strik?utm_term=drama+task+cards
    • https://cdn-cms.f-static.net/uploads/4421339/normal_5fd681627417a.pdf
    • https://nitiruminaxodax.weebly.com/uploads/1/3/0/7/130738633/jubabilobeki-tipelawoxovinaz-kavarasufosokoj-wofosekufeb.pdf
    • https://cdn-cms.f-static.net/uploads/4413225/normal_5fa4f9aa30120.pdf
    • https://cdn-cms.f-static.net/uploads/4421474/normal_5fd2e7c706d4f.pdf
    • https://cdn-cms.f-static.net/uploads/4418987/normal_5f9d34678daaa.pdf
    • https://cdn-cms.f-static.net/uploads/4392853/normal_5faa4044292f2.pdf
    • https://zunivagakasati.weebly.com/uploads/1/3/4/3/134340202/6471872.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/8a23aaed-9a91-4a2a-969e-9c649ce53add/styx_boat_on_the_river.pdf
    • https://s3.amazonaws.com/migivewuwe/bioassay_pharmacology.pdf
    • https://uploads.strikinglycdn.com/files/53df1ab9-d8ca-4cbc-9f75-53a0bfa9a871/79863545154.pdf
    • https://uploads.strikinglycdn.com/files/2188c2f0-0387-447d-a4f1-71178cb7e66c/winchester_semi_auto_shotgun_model_1400.pdf
    • https://s3.amazonaws.com/lixuduwonifa/jquery_ajax_zip_file.pdf
    • https://uploads.strikinglycdn.com/files/27d53c99-4e12-4ee7-8286-9fae4d1e5994/maytag_oven_heating_element_location.pdf
    • https://s3.amazonaws.com/tixeligufokup/buy_rusted_metal_sheets.pdf
    • https://uploads.strikinglycdn.com/files/ae964db7-9d25-4cf5-bd68-8d3043447e19/lion_king_swing.pdf
    • https://s3.amazonaws.com/lorerexeg/crystal_reports_8_free_windows_7.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ae9f.bin
f04775e3462ba1aa0e25eb1a925a2c7d6748159d8efe6d0b37aae82d69e205ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAE9F 5116 bytes
font_01_sfnt_off0000bff4.bin
7f3d10282747ce8664d7dfafffd025481890364df6f94e731a6e161ccc46af0e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBFF4 9780 bytes

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