Malicious PDF — malware analysis report

Static analysis result for SHA-256 898a1538424e6115…

MALICIOUS

PDF

72.1 KB Created: 2021-04-04 03:57:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 01b0efe2449ce9974cca41809f269931 SHA-1: ddc99b9ef17ffcd38b6ee733690f1869b57ff38f SHA-256: 898a1538424e61157c11fb49c1c4e1baf526adaac0bcebfd33342b32a699cf54
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The PDF contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to exploit vulnerabilities or deliver a payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://resalured.ru/strik?utm_term=passion+conferences+build+my+life+chords
    • http://xedobawuvisudip.22web.org/banach_algebra_book.pdf
    • https://cdn.sqhk.co/wekaradukuve/GLicQBb/vagosatujive.pdf
    • http://xekaleduwam.iblogger.org/pathology_of_pulmonary_tuberculosis.pdf
    • https://cdn.sqhk.co/jimumakevaji/icBhe4P/raxawamupotex.pdf
    • http://ita-talia.fun/what_are_some_strengths_and_weaknesses_of_a_nursejwhj8.pdf
    • https://cdn.sqhk.co/nulusezitelo/Yi3jgec/cinemark_iguatemi_shopping_brasilia.pdf
    • http://axecheat5.xyz/how_to_put_an_equilateral_triangle_in_a_circlegvzsa.pdf
    • https://cdn.sqhk.co/xexisini/GvVQhhB/polda_6_apk_ulozto.pdf
    • http://lyudi23.ru/lamborghini_chalai_song_mp46sz3p.pdf
    • http://gozipoxeget.iblogger.org/fukiji.pdf
    • https://cdn.sqhk.co/temejikowewa/dMjcNia/easy_homemade_cake_recipes_in_cooker.pdf
    • http://viwowiziboso.22web.org/tubofot.pdf
    • http://lifeeuro.info/carrier_services_apk_downloadv1fen.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/gomakobez/8152842626.pdf
    • http://nogojituwizax.epizy.com/23596262844.pdf
    • http://luwawabegopit.rf.gd/43428530555.pdf
    • http://fipomazuwasa.epizy.com/how_to_reset_kenmore_quiet_guard_standard_dishwasher.pdf
    • https://s3.amazonaws.com/rodiligarexo/buzz_lightyear_hmm_yes_meme_template.pdf
    • https://s3.amazonaws.com/feliso/wondershare_video_converter_apk_free.pdf
    • https://s3.amazonaws.com/falufusu/husqvarna_st227p_shear_pins.pdf
    • http://renaxodemebi.rf.gd/powerpoint_kinetic_typography_template.pdf
    • https://s3.amazonaws.com/xirixepo/zagavumexopakakesemi.pdf
    • https://s3.amazonaws.com/woberiz/22381190364.pdf
    • https://s3.amazonaws.com/fulazelof/xilis.pdf
    • https://s3.amazonaws.com/toguvaju/ecuacion_quimica_de_combustion_de_metano.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_off0000db65.bin
95ecbc0b5ef98c60f10ca0c7b105943276e6e4390ddb7cd53d7ca02f67173b67		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDB65 5504 bytes
font_01_sfnt_off0000edf3.bin
7339971f9186ff33491536eac3a5058080d6b219741129dcb527eaaf4414b6fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEDF3 10700 bytes

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