Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d7f38aee4a3500d…

MALICIOUS

PDF

70.9 KB Created: 2021-03-16 14:10:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8b83769afd24a3482aa646368346fa8e SHA-1: 2cf33a8de465b460e5c8d48aeda6e3fcdb061022 SHA-256: 9d7f38aee4a3500d20ca05371772f526be2c595637194bb97aa8437293a4f945
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the PDF content imply an attempt to redirect the user to a malicious site, likely for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://zajinet.ru/award?keyword=plant+systematics+gurcharan+singh+pdf
    • http://levantemosaic.com/nexamesd9of.pdf
    • http://shoplus.info/a_major_reason_for_us_involvement_in_latin_america_in_the_1980s_was_tobwuwt.pdf
    • https://torobekaxiwe.weebly.com/uploads/1/3/1/3/131380482/jilaza_zevafariza_neninugeru.pdf
    • http://excschool.ru/72481560485wuphx.pdf
    • http://dakijexok.22web.org/delinaxupupokodejikezobi.pdf
    • http://jedomagisuw.getenjoyment.net/31355745862.pdf
    • https://xedasijaw.weebly.com/uploads/1/3/1/4/131453620/f7058be.pdf
    • http://poguzozod.sportsontheweb.net/59180588719.pdf
    • http://appeal-ig.com/what_is_meant_by_allahs_attribute_the_caliphatelxv2a.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/pewibim/vesexixopigosesimi.pdf
    • http://rilopuxam.rf.gd/how_to_do_oll_rubiks_cube.pdf
    • https://s3.amazonaws.com/rumezo/gevorunosi.pdf
    • http://wawopuviginase.epizy.com/chrome_32_bit_xp.pdf
    • http://lewarojutuveg.rf.gd/dovavafusimejekapimimog.pdf
    • https://s3.amazonaws.com/bomifabipi/98079963338.pdf
    • http://jefepar.rf.gd/cambridge_dictionary_book.pdf
    • http://bemogabidemixu.epizy.com/balzac_and_the_little_chinese_seamstress_movie_review.pdf
    • http://sarozaxag.epizy.com/4375175941.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_off0000d69c.bin
d820261941710586976e7c63623d793d98467dfd2b779451feb45b5cc8cbad06		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD69C 5672 bytes
font_01_sfnt_off0000e9c7.bin
3f450580064cd730fed4cb4541ee3cc1ff6b8ecd85cb08754452931b561c11c4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE9C7 10764 bytes

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