Malicious PDF — malware analysis report

Static analysis result for SHA-256 b980bb9c49f9e4fe…

MALICIOUS

PDF

90.8 KB Created: 2021-03-18 05:22:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 49fc5a193c77a6e18e15962d331edea4 SHA-1: 1cd85db1917b58ce6d82c4054d25e80c36f0afa8 SHA-256: b980bb9c49f9e4fe13a13b5a601b2a400ac8fdbac17713a8cda14a639b3e4269
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains an embedded URI pointing to a suspicious domain, mezovuduw.ru, which is likely used to host a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to online shopping, consistent with phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://mezovuduw.ru/wix?keyword=native+american+clothing+stores
    • https://static.s123-cdn-static.com/uploads/4365601/normal_5fcaf79c66987.pdf
    • https://cdn-cms.f-static.net/uploads/4416495/normal_601dc084544d2.pdf
    • https://cdn-cms.f-static.net/uploads/4471082/normal_5fd636459232c.pdf
    • http://nopuvobetag.mygamesonline.org/what_are_the_different_forms_of_creative_writing.pdf
    • https://cdn.sqhk.co/fegibowaxus/iejeyYI/country_life_harvest_day_fish_pond.pdf
    • http://kernig.store/biwejurivekufunwdejt.pdf
    • http://lumufurisazela.mywebcommunity.org/26437406154.pdf
    • http://my-favshopc.online/micro_sprint_car_racing_near_mej19ok.pdf
    • https://cdn-cms.f-static.net/uploads/4383928/normal_5fd68b13c25ca.pdf
    • https://cdn.sqhk.co/gemadaruvow/aghjjhf/free_download_christmas_bowling_games.pdf
    • https://cdn-cms.f-static.net/uploads/4391611/normal_603e7f7e681e2.pdf
    • http://tuzupibu.scienceontheweb.net/1555876009.pdf
    • https://cdn.sqhk.co/koxuzofu/bshb2g8/nhl_hockey_news_reports.pdf
    • http://esclick.pro/334715728112x782.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/6ad30eb0-4930-4e90-a8e4-24af0e44cc90/presonus_central_station_specs.pdf
    • http://nibizuladode.onlinewebshop.net/gotepunaranu.pdf
    • https://uploads.strikinglycdn.com/files/e6c8208f-255f-4997-89f9-e3e1043db763/62892348521.pdf
    • https://uploads.strikinglycdn.com/files/b671ebfd-84e1-427a-a984-ff7f4b2cc75e/words_that_start_with_postman.pdf
    • https://uploads.strikinglycdn.com/files/ab81d5a8-43e8-4d7f-baa3-9b21af1b516a/dexerasusakimivajonap.pdf
    • https://uploads.strikinglycdn.com/files/2a8b75f7-ffcc-4555-a8d3-522f5e6aa2a1/36949197790.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_off00012707.bin
52ad4a0eadf98edd22ebf763289f48b142ed18dca61c31a185ae955fb0397a63
pdf-font-stream PDF embedded font (sfnt) at offset 0x12707 5240 bytes
font_01_sfnt_off000138be.bin
5d569891e445295b47ccffa403f04010eeb223bbde3179ffd5490af9f1428d3c
pdf-font-stream PDF embedded font (sfnt) at offset 0x138BE 11104 bytes