Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5027d953fb1da70…

MALICIOUS

PDF

72.6 KB Created: 2021-04-01 09:30:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 16a600b326371fbc83ab10d50724b347 SHA-1: 9e4a683154451177f584db71305f31b6d6f5eec2 SHA-256: d5027d953fb1da701ab9141723316fc350850d37923e6d212346d8e4169dbc90
96 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by ML classifiers and ClamAV. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to a 'schedule', aligning with common phishing tactics.

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://druttle.ru/wix?keyword=farnsworth+elementary+schedule
    • http://remont-kholodilnikov.website/bewars_movie_song_in_telugui1jsk.pdf
    • http://moresukko.ru/31077513079qvjrk.pdf
    • http://speak4pro.com/vafalujoranigoxufemis26qa5.pdf
    • http://reduslim-ordina.site/best_tile_material_for_kitchen_backsplash7j7j8.pdf
    • http://bumawusuka.mypressonline.com/mosoguvufokazixuj.pdf
    • https://bejolikide.weebly.com/uploads/1/3/1/4/131437094/zafelabowokowesigame.pdf
    • http://cabinetsapp.xyz/autodesk_autocad_lt_2017pm5k2.pdf
    • http://nefupanono.mygamesonline.org/body_parts_name_with_picture.pdf
    • http://trastqort.online/vavikuziuju5l.pdf
    • http://kokolonesafu.getenjoyment.net/what_is_a_dream-vision_poem.pdf
    • http://dipunag.getenjoyment.net/definite_article_exercises_with_answers.pdf
    • http://gufutaca1.xyz/dawerukewebeic0qu.pdf
    • http://fewutame.getenjoyment.net/xuziwaremeduder.pdf
    • http://vknacruckalaikov123.xyz/caribe_in_nueva_york_poemusx5b.pdf
    • http://fimewot.xyz/99251907362ekma3.pdf
    • http://riwalimuj.scienceontheweb.net/59785873053.pdf
    • https://woseluwimi.weebly.com/uploads/1/3/4/1/134131525/6220686.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://davinawoguzag.atwebpages.com/statistical_process_control_tools.pdf
    • https://s3.amazonaws.com/minabiwa/biogas_production_project_proposal.pdf
    • https://s3.amazonaws.com/votuweroxigezog/sawujirejuluwuwowubetiz.pdf
    • http://zuvuzevo.atwebpages.com/2002_ford_explorer_sport_starter_relay_location.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_off0000dd70.bin
7a46cc5d0c4876af85b3a944217cfbf09c7d1a3c88394c60ac5d61e7b83cf8da		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDD70 5328 bytes
font_01_sfnt_off0000ef78.bin
9feec504dd561d07aa861a801bc58be28d3eb34601f8ede7a1052babbf8bbda7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEF78 11624 bytes

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