Malicious PDF — malware analysis report

Static analysis result for SHA-256 57c6eb184dccd839…

MALICIOUS

PDF

84.8 KB Created: 2021-02-27 22:57:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 0ad33052442342e510e65b46bab6d219 SHA-1: 4bb57ee2b045132b33f3b8b9c2d35a7aa9a9ce7d SHA-256: 57c6eb184dccd8398d32046fbdcf9ea823dcb590db01dba0023ecc555d3a4322
216 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file was flagged as malicious by multiple heuristics, including brand impersonation for credential phishing (Disney) and a large number of external links, suggesting a link farm or downloader. The presence of external URIs and the ClamAV detection indicate it's designed to lead users to malicious content or download further payloads. The ML classifier output of 0.999772 strongly supports its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://vogaxuruxav.weebly.com/uploads/1/3/4/3/134352923/pepijawunafad.pdf.
  • 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://druttle.ru/123?utm_term=what+streaming+service+has+the+road+to+el+dorado PDF link annotation
    • https://cdn.sqhk.co/wuvevevef/liiMghI/v_live_houston_texas.pdfIn PDF document text
    • https://cdn.sqhk.co/vibisimak/mjggmjs/ice_scream_2_horror_neighborhood.pdfIn PDF document text
    • http://nesorus.mywebcommunity.org/charles_capps_preacher.pdfIn PDF document text
    • https://vogaxuruxav.weebly.com/uploads/1/3/4/3/134352923/pepijawunafad.pdfIn PDF document text
    • https://cdn.sqhk.co/konosoka/wijUgex/root_viewer_science_kit.pdfIn PDF document text
    • https://cdn.sqhk.co/dafibuxoki/rpjhurF/hitman_3_release_ps4.pdfIn PDF document text
    • http://straponartist.com/bipuzowefijigpmse.pdfIn PDF document text
    • https://cdn.sqhk.co/refuvowur/bhdCgeO/zomalarunukubilaxivapo.pdfIn PDF document text
    • https://cdn.sqhk.co/defisepeniba/GhiDRjd/evolutionary_psychology_examples_quizlet.pdfIn PDF document text
    • http://idealslimitaly-official.site/how_many_horsepower_is_a_208cc_snowblowerkyg9q.pdfIn PDF document text
    • https://cdn.sqhk.co/numavagoko/Aadicjg/sivunuzivobitatub.pdfIn PDF document text
    • https://cdn.sqhk.co/vuwewiwudesi/h4jgN8c/project_management_communication_skills.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010e61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E61 5428 bytes
SHA-256: 012b83cbe4f44733a018aa24628e961e4ad500c8d8ae8257d05b8f256925b2bb
font_01_sfnt_off000120b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x120B8 10988 bytes
SHA-256: 4da21d65b01ac20b6ebbbd11d6f2bf6a2497cf89ed62e753103d6cdb9ed548fb

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