Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0cce61c108769c9…

MALICIOUS

PDF

80.1 KB Created: 2021-03-14 05:56:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c9a11388dfc279b5a0d0be4b7cb175b4 SHA-1: 8fefdc498d0d0673bb283ceabeefa978ab91adbf SHA-256: d0cce61c108769c9b28321f169d3fa400560edf2ef79719f9d8f41b0c88aefac
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL pointing to 'maypoin.ru', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to interview questions.

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://maypoin.ru/wix?keyword=software+manual+tester+interview+questions
    • https://cdn.sqhk.co/todipageb/ho6gehg/excel_invoice_template_with_drop_down_list.pdf
    • http://poposiruta.mywebcommunity.org/cechy_charakteru_po_angielsku.pdf
    • https://cdn-cms.f-static.net/uploads/4366029/normal_6038b77cb703a.pdf
    • https://static.s123-cdn-static.com/uploads/4414161/normal_5ff0c34d719e6.pdf
    • http://pamatidela.getenjoyment.net/multivariate_analysis_notes.pdf
    • http://bawazofo.getenjoyment.net/3180250667.pdf
    • https://cdn.sqhk.co/dekaroku/FeGid4L/dominos_codes_ireland_october_2020.pdf
    • http://stat-index-co.com/87758475709ca34p.pdf
    • http://erogan-encolumbia.site/96834367354iiny5.pdf
    • https://cdn.sqhk.co/temejikowewa/XierGWW/baxamasujetajatoxugelo.pdf
    • https://cdn-cms.f-static.net/uploads/4365541/normal_601d06f990101.pdf
    • http://wellwork.site/aquamarine_full_movie_in_hindi_watch_onlineyb70z.pdf
    • http://dorightunion.com/mawekav6mfvu.pdf
    • http://rafale.store/sitalotovaxoxobtw4qy.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/tiluwisulepam/98374761680.pdf
    • https://s3.amazonaws.com/wupiwupiwot/xokamiponibafarorezizaj.pdf
    • https://s3.amazonaws.com/sutawowirosuvuv/roselekurubaxuwizelud.pdf
    • https://s3.amazonaws.com/zunaporam/81715493827.pdf
    • https://s3.amazonaws.com/tezofuretejom/perfect_ellen_hopkins_series.pdf
    • https://s3.amazonaws.com/wemupajese/65853985284.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_off0000fb39.bin
9736cf38a2dcef1207580e857ad1b35c18839df2655ac17cfaef860a065d5a8e
pdf-font-stream PDF embedded font (sfnt) at offset 0xFB39 5292 bytes
font_01_sfnt_off00010d42.bin
1b8bd605e45c452c11b0a3459fee895013bc519ab1bce3215013ac5b63773d13
pdf-font-stream PDF embedded font (sfnt) at offset 0x10D42 11032 bytes