Malicious PDF — malware analysis report

Static analysis result for SHA-256 9919b43a203dc454…

MALICIOUS

PDF

80.1 KB Created: 2021-02-25 05:15:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 02161b2a288ff1a73bb22941ce6c6727 SHA-1: b6191d6000612db968c6152b26a03bdce0bf4984 SHA-256: 9919b43a203dc4546313a1c494e5aba6ae8e9af1745020a4ce5896a2223a1aff
104 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. The presence of an embedded URI pointing to 'druttle.ru' and a heuristic indicating a visual download button suggests a phishing or social engineering attempt to trick the user into downloading a payload. No scripts were extracted, but the overall structure and detection indicate a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=marco+frisina+spartiti+pdf
    • http://fisareboveda.getenjoyment.net/28436485991.pdf
    • http://kinemulawaw.sportsontheweb.net/sword_art_online_alicization_lycoris_update_1.11.pdf
    • http://pazadixokumox.sportsontheweb.net/foxit_reader_print_multiples.pdf
    • http://kuxidubavez.iblogger.org/nikel.pdf
    • https://cdn.sqhk.co/xafiguzi/XetGSAi/fefevipiwelajelixodixofub.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/bubeto/sulifakix.pdf
    • https://s3.amazonaws.com/telasebisu/lazezip.pdf
    • http://kakasis.onlinewebshop.net/mimapogenusude.pdf
    • https://s3.amazonaws.com/vebogotexaf/dibug.pdf
    • http://kifofok.epizy.com/creativity_guided_meditation.pdf
    • https://s3.amazonaws.com/jeduzizonox/interview_formal_wear.pdf
    • http://bogalibamadom.myartsonline.com/what_is_the_impact_of_globalisation_on_indian_economy.pdf
    • https://s3.amazonaws.com/kitakilesa/2303795769.pdf
    • http://jeborawaleko.atwebpages.com/24175584746.pdf
    • http://gosaduzunake.myartsonline.com/how_do_you_check_the_transmission_fluid_in_a_volkswagen_jetta.pdf
    • https://s3.amazonaws.com/medaliwifufugel/exception_handling_in_spring_resttemplate.pdf
    • https://s3.amazonaws.com/rafiralexezol/daxotumonorapefimekisasu.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_off0000f122.bin
7c30b275faf13653136e4ea84640517bc56a4ae86352f6220fe102108006e7b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF122 5120 bytes
font_01_sfnt_off000102aa.bin
d2acb0c550988416329f82d4fe5f78e7913d4c03ceab01bc049f4ebae065d9dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x102AA 15948 bytes

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