Malicious PDF — malware analysis report

Static analysis result for SHA-256 f957b4cfd65f5a09…

MALICIOUS

PDF

86.7 KB Created: 2021-04-04 19:08:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8c34f8246f5b4a9a493a30d36c5ca159 SHA-1: 6215cf6dfeb07506ed51e11988fd40833b7693d6 SHA-256: f957b4cfd65f5a096ed83e37782449a007eabfe53bcb3b01374c2c0141d32605
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 URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The document body, though heavily obfuscated, suggests a lure related to academic homework answers, a common tactic for phishing or malware distribution.

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://mezovuduw.ru/aws?utm_term=chapter+1+aplia+homework+answers+philosophy
    • http://custits.space/how_to_write_a_short_response_for_job_applicationmbl9j.pdf
    • http://goldenframecollision.com/14114380889tp59r.pdf
    • http://idealicagocce.site/que_es_un_estilo_de_vida_occidentalr7jvr.pdf
    • http://svoydvalend.xyz/20478859121lamke.pdf
    • http://creditscoretracking.info/spanish_preterite_and_imperfect_practice_paragraph8ly8f.pdf
    • http://fajujefa.getenjoyment.net/1st_grade_math_worksheets_word_problems.pdf
    • http://gupirigugorixuf.sportsontheweb.net/la_campanella_guitar.pdf
    • http://janafan.scienceontheweb.net/mange_dog_shampoo_near_me.pdf
    • http://normal-id.com/chiavenato_administrao_financeirahxcne.pdf
    • http://jixewelo.scienceontheweb.net/52246577356.pdf
    • http://vuzomubanaj.22web.org/english_grammar_articles_examples.pdf
    • http://leyloften.online/95457581628u7ks2.pdf
    • http://garirixis.22web.org/ravujovixofififunimaf.pdf
    • http://sfr-webmail.com/8916089327uupws.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://katiwepu.rf.gd/bateria_automotriz_funcionamiento.pdf
    • http://nozozuwovore.atwebpages.com/87065400289.pdf
    • http://wujagenak.atwebpages.com/attachment_theory_by_john_bowlby.pdf
    • http://vujipopeb.rf.gd/bitdefender_free_crack.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_off00011750.bin
e380a212a56d72a5e39b428ecf7707cee4f817449099b300f44f2334fc5bdf61		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11750 5276 bytes
font_01_sfnt_off00012929.bin
f27570508f3726a7190ccdda4524929f86e79c3884ecbfb58d7ce78a94e53541		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12929 10640 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.