Malicious PDF — malware analysis report

Static analysis result for SHA-256 2527eb927c966be3…

MALICIOUS

PDF

73.1 KB Created: 2021-03-19 13:01:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5535c7873a5c23a9b0c1a6f689e9ae19 SHA-1: e92c675e9f67c6ac04c1a0937319d2224e3cf30e SHA-256: 2527eb927c966be317973c4c73707b68ac4eb9eb5bd6e959558a6fc85c95afc0
96 Risk Score

Malware Insights

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

The file is a PDF that contains an embedded URI pointing to a suspicious domain, identified as malicious by ML classifiers and ClamAV. The document body, though heavily obfuscated, suggests a lure related to 'genetic code pdf'. The presence of multiple unknown reputation URLs further supports a malicious intent, likely for phishing or to serve a second-stage payload.

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/award?keyword=genetic+code+pdf
    • http://tehnikator.ru/mathematical_proofs_a_transition_to_advanced_mathematics_4th_edition_solutionszh32l.pdf
    • http://ketousa.site/free_fake_divorce_certificate_templatespqk0j.pdf
    • http://mawosatejojeka.sportsontheweb.net/candidiasis_en_hombres.pdf
    • http://f13x.xyz/how_to_rekey_a_schlage_lock_with_reset_keyz21sf.pdf
    • https://cdn.sqhk.co/xivovido/hY40BPk/sexekegaguguzog.pdf
    • https://cdn.sqhk.co/diwomijo/vhaCGgi/neighborhood_walmart_harvey_careers.pdf
    • https://static.s123-cdn-static.com/uploads/4459641/normal_5ffbe3850b989.pdf
    • http://xizugef.medianewsonline.com/ia_maron_calculus_download.pdf
    • https://cdn-cms.f-static.net/uploads/4381294/normal_5fd1910dd80b5.pdf
    • https://cdn-cms.f-static.net/uploads/4388063/normal_602c7fa0bf423.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/nitajosasa/elkonin_boxes_template_free.pdf
    • http://sefimuzuxenuxa.rf.gd/86419520007.pdf
    • http://juvusamis.epizy.com/77399888361.pdf
    • http://gizexagivet.rf.gd/78693936579.pdf
    • http://tupesom.atwebpages.com/33873438303.pdf
    • http://supoxurenabix.epizy.com/fiwami.pdf
    • http://kabuzore.atwebpages.com/zukonogaga.pdf
    • https://s3.amazonaws.com/zerejibixupav/honeywell_thermostat_instructions_rth6580wf.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_off0000e3b8.bin
a9c955adc5407539c1a9476dce6a00dcc4a87c46b9bfd80f1ac61b04a0130280		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE3B8 4664 bytes
font_01_sfnt_off0000f3b7.bin
e6f9b7a12bc54e0167fce86d09d6b77730c4b2797dead718fbadfbec844c9c98		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF3B7 10616 bytes

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