Malicious PDF — malware analysis report

Static analysis result for SHA-256 5878ad3a1ca00aa1…

MALICIOUS

PDF

84.5 KB Created: 2021-02-18 01:14:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 8d95eb3a043256add5aede7efd1d2154 SHA-1: 3197f7b500ce4ed6146422435d0a46220fb9cd07 SHA-256: 5878ad3a1ca00aa177d1f5824a6112d95358bf7025d29deade74adbc892e6420
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that mimics a search engine result, likely intended to trick the user into clicking it. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing or trojan PDF. The presence of multiple unknown reputation URLs further supports the malicious nature of the document.

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://bologen.ru/123?utm_term=where+does+transmission+fluid+go+in+a+2007+chevy+impala PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4417314/normal_5ff86aa73700d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417413/normal_6004877d49fbf.pdfIn PDF document text
    • https://cdn.sqhk.co/rexukewanej/gn1jfqe/70881589063.pdfIn PDF document text
    • http://garant-ritual.online/51783837454ko8u6.pdfIn PDF document text
    • http://natnat.fun/income_guidelines_for_pregnant_medicaid_floridao9bxn.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444626/normal_602d9fa6d7c4c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370987/normal_601a2e632918c.pdfIn PDF document text
    • http://teachost.com/91862987370h5n00.pdfIn PDF document text
    • http://kittyplay.online/fedulumavezewifojakw2pr.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375694/normal_5fd6854f49422.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
    • https://s3.amazonaws.com/fopalew/exercicios_poriferos_e_cnidarios.pdfIn PDF document text
    • https://s3.amazonaws.com/zinudipir/79507716565.pdfIn PDF document text
    • http://gulujuwelowox.epizy.com/audit_committee_report_meaning.pdfIn PDF document text
    • https://s3.amazonaws.com/feliso/configuring_basic_ripv2_and_ripng_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/tikofaketonub/43903164111.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_off0000fd66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD66 5980 bytes
SHA-256: 7dda9f58c343ce4f0846b3c739213d077f09be58e61e71a6980dbe9a04b98980
font_01_sfnt_off000111b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111B2 10844 bytes
SHA-256: 3dfdc1166bac11ed3ca2d9503070b659d47929442e898110d4e367601b1120a7
font_02_sfnt_off00013682.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13682 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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