Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c32024363480fc4…

MALICIOUS

PDF

72.5 KB Created: 2021-03-15 15:14:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3f9f4ebe0bf436c60b5b5c07dbe99b38 SHA-1: 17f51f455b2d15f4e135755f0f2d0597f2d77c67 SHA-256: 7c32024363480fc4164990a6cde5fcae661f7311b2bc0e03a74a13c3c336a957
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that directs users to a malicious domain, disguised as a tax worksheet. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the presence of external URIs and the overall classification suggest a phishing attempt to harvest user information or deliver a payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://mezovuduw.ru/wix?keyword=1040ez+worksheet+line+f+fafsa
    • http://pivojowemetobiv.mywebcommunity.org/juvarepasumobiloda.pdf
    • https://cdn.sqhk.co/limiwebu/hehfGMy/nihilumbra_void_mode.pdf
    • https://cdn.sqhk.co/lamidipeke/YuEhjjh/59088443780.pdf
    • https://cdn.sqhk.co/malasexek/QMijU0a/nails_and_spa_brecksville_ohio_prices.pdf
    • https://cdn.sqhk.co/wuseguwe/JjfuzBX/42480145895.pdf
    • https://cdn.sqhk.co/muzorefu/IhcidoT/40402433145.pdf
    • https://cdn.sqhk.co/tumokufagu/dhhJIjf/crossing_church_woodlands.pdf
    • http://figuxovutofid.mygamesonline.org/14246207622.pdf
    • https://cdn.sqhk.co/suxunuke/erJFjid/51538857122.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/zarevizebi/65833820382.pdf
    • https://s3.amazonaws.com/fonazuzixagizir/xemumegutibawem.pdf
    • https://s3.amazonaws.com/tesodagiwor/screen_recorder_pro_apk_iphone.pdf
    • https://s3.amazonaws.com/vazisi/low_carb_mediterranean_diet_food_list.pdf
    • https://s3.amazonaws.com/gupawupigawono/tapujamidoto.pdf
    • https://s3.amazonaws.com/jovekus/silanazajelobo.pdf
    • https://s3.amazonaws.com/latufenaw/hampton_bay_fan_remote_quit_working.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_off0000df2a.bin
b9f2105f6eddb6b73c99f4a118350ece09461e8a9b5a19fc60f3ba76560ccc2c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDF2A 5248 bytes
font_01_sfnt_off0000f127.bin
e39c309a617cb19714c1f4f69bf584b55c0bf1b64ade84cbd2865147a67f865d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF127 10708 bytes

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