Malicious PDF — malware analysis report

Static analysis result for SHA-256 9099133053eff588…

MALICIOUS

PDF

84.3 KB Created: 2021-03-03 03:57:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 21edd3bae21aed50cf725f3a931c3fb1 SHA-1: 300fbf80009b8437d9329cca3e2416aa8419fa3e SHA-256: 9099133053eff5884010ae7babf0d675804a61435257b658623380a09781e958
96 Risk Score

Malware Insights

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

The file is a PDF document flagged by ClamAV as Pdf.Phishing.Trojan. It contains an embedded external URI pointing to a suspicious domain, likely used to host a malicious payload or redirect to a phishing site. The document body, though heavily obfuscated, suggests a lure related to employment inquiries, aligning with phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://xajibur.ru/strik?utm_term=how+much+does+family+dollar+pay+employees PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4406228/normal_6010c817b8118.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475565/normal_5fd785aea9dd1.pdfIn PDF document text
    • https://cdn.sqhk.co/bidogefapo/eibIija/temple_dash_run_brave_hero_temple_escapes.pdfIn PDF document text
    • http://instapodarok.site/75223032947av66b.pdfIn PDF document text
    • https://cdn.sqhk.co/mopomotop/73heihB/regalar_paquetes_movistar_el_salvador.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389603/normal_6004d920e098a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4492575/normal_5fcdfba685fa0.pdfIn PDF document text
    • https://cdn.sqhk.co/pubisifibuj/2ewmhax/cnc_vmc_operator.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372982/normal_5fe8da2d8a787.pdfIn PDF document text
    • https://cdn.sqhk.co/zikegasenar/fiacMUS/zeluka.pdfIn PDF document text
    • https://cdn.sqhk.co/madufuxenuw/vhflcjg/adventure_time_simon_abadeer_chapter_2.pdfIn PDF document text
    • http://uscarins.info/wifodwcx55.pdfIn PDF document text
    • http://accueilcmb.com/95039792826nnwzn.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448539/normal_60180f2587263.pdfIn PDF document text
    • https://cdn.sqhk.co/tavaxikanabu/ghGgjwK/occupation_2._5_mod_apk_unlimited_ammo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://suvapik.epizy.com/iso_27001_interested_parties_template.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fedc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEDC 5244 bytes
SHA-256: cd65b1fef206622a9b95257b8fb9237e2e9bef48f4d251899f6a25364e329da8
font_01_sfnt_off000110be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110BE 10900 bytes
SHA-256: 44eedae0753823346ab1ef40c5e4e3f19795e35320cad78b6c2af1f95e800736
font_02_sfnt_off000135d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x135D1 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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