Malicious PDF — malware analysis report

Static analysis result for SHA-256 15d6a7dfde0fc79c…

MALICIOUS

PDF

78.2 KB Created: 2021-05-29 06:44:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6b8736c8650237cdbbf80d765b19f372 SHA-1: e64945a994898fbf5749ccc40c996f9c3866fb29 SHA-256: 15d6a7dfde0fc79caa6993c0dc83cb1d6cd21d22fff3c8ec80987a4c82ed4136
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with a critical heuristic identifying it as a PDF link farm. One prominent external URI, 'https://gimoguvi.ru/strik?utm_term=couple+de+serrage+jante+alu+renault+laguna+3', is flagged as suspicious. The document body, though heavily obfuscated, appears to contain metadata related to car parts, suggesting a lure to disguise the malicious intent. The ML classifier and ClamAV detection strongly indicate maliciousness, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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
  • 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://gimoguvi.ru/strik?utm_term=couple+de+serrage+jante+alu+renault+laguna+3
    • https://static.s123-cdn-static.com/uploads/4496815/normal_60016d23b7737.pdf
    • https://cdn-cms.f-static.net/uploads/4445331/normal_60303b170f014.pdf
    • https://static.s123-cdn-static.com/uploads/4446765/normal_5fed41022b847.pdf
    • https://cdn-cms.f-static.net/uploads/4498842/normal_5fda3a2dcda07.pdf
    • https://lonutuwuw.weebly.com/uploads/1/3/7/5/137511676/bumosedekalaxa.pdf
    • https://cdn-cms.f-static.net/uploads/4418178/normal_60238ce4f31ad.pdf
    • https://jufukakoxojopop.weebly.com/uploads/1/3/4/3/134317893/nekexabax_kenilak_lajoponazifife_pipubidawivakov.pdf
    • https://gomufutezenufi.weebly.com/uploads/1/3/4/6/134677359/1238652.pdf
    • https://vaxunupix.weebly.com/uploads/1/3/0/7/130775436/cea2066866.pdf
    • https://pizanege.weebly.com/uploads/1/3/5/3/135391653/wisarukepixoj_lemupifapubuwek_tusita.pdf
    • https://cdn-cms.f-static.net/uploads/4454435/normal_605f8c092ecd7.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/ace93ecf-017c-49ec-9cbd-b859d057512e/tixovetotujiwu.pdf
    • https://uploads.strikinglycdn.com/files/519d1bb7-e16b-4167-ad2e-5a0e6c01a422/worksheet_21_dna_replication.pdf
    • https://uploads.strikinglycdn.com/files/c1272d6b-c64a-4070-8c5d-8200c9b29be2/twilight_movie_2012_download_in_hindi_filmyzilla.pdf
    • https://uploads.strikinglycdn.com/files/9dd696a1-98db-40f3-a5dc-fc45bb051378/nedukosowefon.pdf
    • https://uploads.strikinglycdn.com/files/44bccffd-97d5-4826-9d6b-d278e2c04bd2/what_are_the_gears_in_manual_transmission.pdf
    • https://uploads.strikinglycdn.com/files/90d5da9c-092e-4016-adf0-0c2953e2383a/hermosas_criaturas_pelicula_completa_en_espaol_gratis_online.pdf
    • https://uploads.strikinglycdn.com/files/670fd228-ad7d-4a03-900c-f19b2c0cbc85/how_much_does_secret_service_make_an_hour.pdf
    • https://uploads.strikinglycdn.com/files/2399c2bd-2aee-4485-9a3c-703a7a96eebb/how_to_write_an_essay_example_tagalog.pdf
    • https://uploads.strikinglycdn.com/files/c125cd58-f271-4b07-8ff6-f8f4b2d250a0/signos_de_trombosis_en_pierna.pdf
    • https://uploads.strikinglycdn.com/files/d91a9697-413b-4040-add6-83ec11cd6ef7/holy_mass_of_christ_the_savior_lyrics.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_off0000eddb.bin
2f6d57df976750524e67e2bc0c6d445a60616c3be9000c3823a4d70deddcefd5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEDDB 5272 bytes
font_01_sfnt_off0000ffd4.bin
1ef3f4550e348a7ac997a2c87abf0ed72bbfe0319e39c77ec69a7635fba0f711		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFFD4 12844 bytes

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