Malicious PDF — malware analysis report

Static analysis result for SHA-256 5006253429616db5…

MALICIOUS

PDF

82.2 KB Created: 2021-03-18 09:49:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 85ce70a4d3b318802c50d13d8743d533 SHA-1: d43dbfbd766525877f7222c1871b6a7020810914 SHA-256: 5006253429616db5b499314431fb8f9ecf5d8b94892a0436a359a15a649ba93f
136 Risk Score

Malware Insights

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

The file is a PDF document that has been flagged by multiple heuristics and a machine learning classifier as malicious. The presence of the 'SE_PASSWORD_ARCHIVE_LURE' heuristic indicates that the document likely instructs the user to open a password-protected archive, a common tactic to evade gateway security scanning. The embedded URL points to a suspicious domain, suggesting a potential download or redirection to a malicious payload. No scripts were extracted from this sample, but the overall context points to a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://vilenefex.ru/strik?utm_term=libro+winning+jack+welch+espa%25C3%25B1ol+pdf
    • https://cdn-cms.f-static.net/uploads/4405652/normal_5fd77daba1408.pdf
    • https://cdn.sqhk.co/luwiwaduna/QTiWgi2/sample_feedback_comments_for_student_writing.pdf
    • https://cdn-cms.f-static.net/uploads/4413696/normal_5fd8b58f6663a.pdf
    • https://cdn-cms.f-static.net/uploads/4444646/normal_5fd6de834fe71.pdf
    • https://cdn-cms.f-static.net/uploads/4460266/normal_602e7e65d0631.pdf
    • http://vovality.club/6734308309728u3y.pdf
    • https://cdn-cms.f-static.net/uploads/4477139/normal_6039d1fc5daf1.pdf
    • https://static.s123-cdn-static.com/uploads/4474978/normal_5fce5e5aa408c.pdf
    • http://tipofeliluget.medianewsonline.com/quantitative_value_investing_strategy.pdf
    • http://gamedv.design/how_to_top_up_transmission_fluid_vt_commodorexf9xq.pdf
    • https://cdn.sqhk.co/letarezetap/qCFbfIF/free_funeral_program_brochure_psd_template.pdf
    • https://static.s123-cdn-static.com/uploads/4409610/normal_5fd052020f3d2.pdf
    • https://cdn-cms.f-static.net/uploads/4408177/normal_5fd124a48b5b8.pdf
    • https://cdn.sqhk.co/virurewev/dgh7jxd/sebev.pdf
    • https://cdn-cms.f-static.net/uploads/4464877/normal_600e5c35e0b65.pdf
    • http://service-hire.com/cowboy_good_morning_imagesuybwx.pdf
    • http://gewusoluxul.scienceontheweb.net/cations_and_anions_list_with_symbols.pdf
    • http://gratoraama.website/mapa_provincial_de_huallaga_tanager15qzl.pdf
    • http://copriyghtconfirmed.com/88987875434yigg6.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/gezizefefififa/wupudowekoxalinabojuguz.pdf
    • http://xuvuzonixo.onlinewebshop.net/the_brothers_karamazov_the_grand_inquisitor.pdf
    • https://s3.amazonaws.com/pokixovuxik/benelli_bn302_service_manual.pdf
    • http://zodofujeki.atwebpages.com/7077762570.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_off0000fe8f.bin
9cc8613a57bbafd653839d868c4e959565c3635049709f6c35b89497ea45292a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFE8F 5940 bytes
font_01_sfnt_off0001129c.bin
c879a2b90fa98e999bcf5c08ed0057af901fe6761856106893cd1d15acc1fa0c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1129C 11880 bytes

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