Malicious PDF — malware analysis report

Static analysis result for SHA-256 26d5eaa11db8c85d…

MALICIOUS

PDF

78.0 KB Created: 2021-04-01 05:00:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 701d726a0f7d3b392e37b8e3564c11a6 SHA-1: 56b5b50f4a6dec9f044078c563a4401ee11a0dc6 SHA-256: 26d5eaa11db8c85d8101d7f58a39cf47ae5bdc0526e886f7de9eb848d173887d
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of an external URI pointing to 'resalured.ru' suggests a phishing or redirection attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing lure designed to trick users into visiting a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://resalured.ru/aws?utm_term=is+a+700+watt+microwave+any+good
    • http://kaguveka.22web.org/south_movie_2019_ke.pdf
    • https://cdn-cms.f-static.net/uploads/4487905/normal_601e77a3bdd85.pdf
    • https://cdn-cms.f-static.net/uploads/4378404/normal_604d37020effe.pdf
    • http://dufigep.scienceontheweb.net/76561753868.pdf
    • http://bajifepeselok.sportsontheweb.net/arduino_or_raspberry_pi_for_home_automation.pdf
    • http://gafabotipunofu.mywebcommunity.org/keloxugujunaputu.pdf
    • http://gimatadokij.mygamesonline.org/ibps_rrb_notification_2020_salary.pdf
    • http://mozodulo.iblogger.org/tipos_de_investigacion_cualitativa.pdf
    • http://pewujok.mypressonline.com/bikhre_moti_urdu.pdf
    • http://wifisef.medianewsonline.com/15347955187.pdf
    • http://kinerexasuxemo.getenjoyment.net/ap_state_budget_2020_20.pdf
    • http://lebojabufi.medianewsonline.com/23954304662.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://rujidafedisezu.atwebpages.com/samivoraxeme.pdf
    • https://ad9f1622-e3b7-49db-bfef-326c48fb2104.filesusr.com/ugd/a467d2_c290dcee54e34e6f82aa06c704d649e7.pdf?index=true
    • http://xemigososefof.atwebpages.com/tinkle_double_digest.pdf
    • https://0e8f88b9-656e-4b05-9cd8-8bd477f85547.filesusr.com/ugd/95b9ea_91bf26a0f2ef475cb8db6ef90727ddaa.pdf?index=true
    • http://roxegubipav.epizy.com/rafiq_azam_architecture_for_green_living.pdf
    • http://julatelowix.rf.gd/zepikebimi.pdf
    • http://rigidafavubo.myartsonline.com/ziteba.pdf
    • https://e2a3f85e-3ce8-4c76-99a2-e63219cad5ad.filesusr.com/ugd/473d25_c15b002c7b044a16bd5aa7ed7672a693.pdf?index=true
    • http://nuwadolonopip.onlinewebshop.net/cambios_psicologicos_en_el_embarazo_por_trimestres.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_off0000f02f.bin
fe63fd09541519f3eaeae3fc74fe3903a68f50ec3d8465fc02efb595b18b8513		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF02F 5640 bytes
font_01_sfnt_off00010365.bin
75b1e2d8c502a1c94dbba37d15a951b193e577478b522207a3a7d05ccb603210		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10365 11160 bytes

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