Malicious PDF — malware analysis report

Static analysis result for SHA-256 468573857ff8610e…

MALICIOUS

PDF

73.7 KB Created: 2021-04-03 11:37:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6d2fbea2a7237ffcae574d4166af1422 SHA-1: e8f9dbb416a15ef1589dd426487462d514213d93 SHA-256: 468573857ff8610e096b5451ada36514f6b518e89615427edbe815c25e9e012f
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, which is a strong indicator of a phishing or malware distribution attempt. The ML classifier and ClamAV detection further confirm the malicious nature of the file. While no scripts were explicitly extracted, the presence of external URLs suggests the document is designed to redirect users to malicious content, likely a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://midufefew.ru/wix?keyword=the+winning+attitude+maxwell+pdf
    • http://rent-nout.site/34347192907v8f7d.pdf
    • http://zilitimo.getenjoyment.net/68201516538.pdf
    • https://static.s123-cdn-static.com/uploads/4455684/normal_5ffc107d9beea.pdf
    • https://cdn.sqhk.co/moxibusas/jfEgihf/kasidekuxesowonon.pdf
    • https://cdn-cms.f-static.net/uploads/4463006/normal_604a9ecc13de4.pdf
    • https://cdn.sqhk.co/tegatiwuwax/jjEjh6m/gutes.pdf
    • http://voztrans.ru/troy_bilt_pressure_washer_2600_psi_has_no_pressurecr2lf.pdf
    • https://cdn-cms.f-static.net/uploads/4409244/normal_5fd99e0cbedb9.pdf
    • https://cdn.sqhk.co/dufolatik/jIgdtDT/45353572014.pdf
    • https://cdn-cms.f-static.net/uploads/4500910/normal_601f5f8f0a167.pdf
    • https://cdn.sqhk.co/fuvebopeweb/jbaiige/mindshare_nyc_glassdoor.pdf
    • https://cdn.sqhk.co/wobuwozavenu/WPgj4M1/xovagogalozuxexagenijiton.pdf
    • http://goladelexugezi.sportsontheweb.net/what_words_to_capitalize_in_a_title.pdf
    • http://dietnatur.fun/80742734782apa71.pdf
    • http://teguruta.medianewsonline.com/kumpulan_cerita_anak.pdf
    • http://donbetosstreettacos.com/38645280916fubza.pdf
    • https://cdn.sqhk.co/wetaxawirewu/XiVghgg/black_action_hero_actors.pdf
    • https://cdn.sqhk.co/dukizukijire/jdhcogd/dowofazesatesani.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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_off0000df08.bin
91380d1602b0b4bf35fbaa7d9b21691732bad283eb7d51f09771b430508a3e87		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDF08 5292 bytes
font_01_sfnt_off0000f103.bin
1b9aafd0434b6aafcd275a9fb5cae2a60c39e88c84d7a16a9bbc694d26866dfe		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF103 12284 bytes

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