Malicious PDF — malware analysis report

Static analysis result for SHA-256 05424744f62268d2…

MALICIOUS

PDF

87.0 KB Created: 2021-03-16 19:20:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4810365dc042cee73614b497856b409b SHA-1: d6c6ad044503b74d396dbe4baede6bdbc14dc067 SHA-256: 05424744f62268d2607d1b2f1fff81b5b8e1202f912a5071a7b2dd363b1c7c6d
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URI points to a suspicious domain, likely used for phishing or malware distribution. Although no scripts were extracted, the PDF structure and the presence of external URIs suggest an attempt to redirect the user to a malicious site, potentially for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • 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://pelibifir.ru/strik?utm_term=hp+photosmart+5510+e-all-in-one+printer+series
    • http://fanutoragozogow.sportsontheweb.net/asfixia_perinatal_2020.pdf
    • http://dalidusiz.mywebcommunity.org/62622657278.pdf
    • http://rexevivejegox.scienceontheweb.net/wanebukisub.pdf
    • http://fijexojor.getenjoyment.net/biblia_takatifu_swahili.pdf
    • http://xepidenad.scienceontheweb.net/48978175493.pdf
    • http://roselosudeve.sportsontheweb.net/legokojupakexidas.pdf
    • http://gojevomarokabe.getenjoyment.net/anatomie_du_pied_et_de_la_cheville.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/91194248-3664-4ffc-88bd-2c32749c8de1/bexebojufasepuludiwepe.pdf
    • https://uploads.strikinglycdn.com/files/b744ab9d-1c24-49f7-9300-c6fe580f88ff/personajes_principales_y_secundarios_del_libro_mi_planta_naranja_lima.pdf
    • https://uploads.strikinglycdn.com/files/a8c4733f-6c4c-4693-a2f9-bdca47844d10/george_foreman_rotisserie_recipes_pork.pdf
    • https://uploads.strikinglycdn.com/files/7a9cf763-9d3a-4b4f-af22-deb58b35acec/87140401581.pdf
    • http://xagazusapikim.epizy.com/agent_reporting_agreement.pdf
    • http://tofarogupa.rf.gd/stihl_trimmers_gas.pdf
    • https://uploads.strikinglycdn.com/files/7f115dd6-fed6-4e7c-af8a-c6602779aa79/sikegepazeka.pdf
    • https://uploads.strikinglycdn.com/files/a673b8f2-6991-4782-bdf5-815cf4d4fa3a/joramelinifolafud.pdf
    • https://uploads.strikinglycdn.com/files/a78560b1-9598-469b-962b-29447f0c3ea5/luropa.pdf
    • https://uploads.strikinglycdn.com/files/0256cd3d-c8f5-4c2b-b967-d988f699c3f7/64198491239.pdf
    • https://uploads.strikinglycdn.com/files/f761be42-ddbf-48e7-83b0-cd4e77d84858/my_kelly_services.pdf
    • https://uploads.strikinglycdn.com/files/32dd76e3-149e-4f43-b912-642e9a74be4f/can_you_legally_hunt_an_elephant.pdf
    • https://uploads.strikinglycdn.com/files/9ea2aa23-deb6-405b-a0e9-89dc583e6b7f/probability_and_statistics_for_engineering_and_the_sciences_9th_edition_solutions_walpole.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_off00011553.bin
fed5f0c6ff9d8320bc022e7fcde550ce0cbfd685c02294c88ac21abedc7d0a34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11553 5368 bytes
font_01_sfnt_off0001276f.bin
6fcd94d74a085d1ce77187f1e8f624ae33b9ca561eea2c2034d26adc15d7dc13		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1276F 10928 bytes

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