Malicious PDF — malware analysis report

Static analysis result for SHA-256 65ea3787302a4ec4…

MALICIOUS

PDF

70.7 KB Created: 2021-01-24 18:14:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 05c2cf8f7815777525f46da8c7738ce6 SHA-1: 0f367cf1332d3c77f12931e5bbd8541ec0d19bd9 SHA-256: 65ea3787302a4ec4a2102e49decb4289afc827c5234b2751ad65f4f376aea10b
184 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically identified as a known malicious redirector. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were extracted, the presence of malicious links and the document's structure suggest it's designed to lead the user to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://crophysi.ru/wb?keyword=castle%20of%20illusion%20starring%20mickey%20mouse%20ps3%20amazon In PDF document text
    • https://static.s123-cdn-static.com/uploads/4475577/normal_5fc6926b656b6.pdfIn PDF document text
    • https://rivepolimuf.weebly.com/uploads/1/3/0/8/130813401/295668.pdfIn PDF document text
    • https://kurenilomu.weebly.com/uploads/1/3/4/0/134042522/cbf04c37b7.pdfIn PDF document text
    • http://pivifemopore.22web.org/tiziligabobatojejo.pdfIn PDF document text
    • https://tigibivimibi.weebly.com/uploads/1/3/4/3/134344299/2518832.pdfIn PDF document text
    • http://shoop-ft.ru/picture_collage_software_free_download1ubpa.pdfIn PDF document text
    • http://trokot-shopnew.online/wavuliruxogeribobosb18yi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412762/normal_5ff24bbb7ccb0.pdfIn PDF document text
    • http://nashremont.site/wirajusk23w.pdfIn PDF document text
    • http://dalnoboyi.xyz/gokevabikebojopedelv031.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/vipuxafol/rerur.pdfIn PDF document text
    • http://rodobokojezaga.epizy.com/jilotimujugatasajuto.pdfIn PDF document text
    • http://nakepusejedub.epizy.com/android_studio_gradle_proxy_configuration.pdfIn PDF document text
    • https://s3.amazonaws.com/fonibinaraj/bramman_songs_masstamilan.pdfIn PDF document text
    • http://luxixeg.epizy.com/bookkeeping_and_accounting_crash_course.pdfIn PDF document text
    • http://jobifizokugo.rf.gd/dasonifanolugejoko.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_off0000c8c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8C4 5620 bytes
SHA-256: 22ac53a155bbb78acf815bbc493274a586121d53b00c8e835ee6cb0b6abaaa6d
font_01_sfnt_off0000dbea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBEA 10408 bytes
SHA-256: c27215baeb7ea9ee45cf6a64301f0fcb46dc107b219a5264c114f8deb4d0942f
font_02_sfnt_off0000ff99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF99 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

Open this report in the interactive analyzer, or submit your own file for analysis.