Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee216567dd730ade…

MALICIOUS

PDF

66.8 KB Created: 2020-12-20 14:44:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 3c63a5a5b06cecd5d79fd6d7984e2187 SHA-1: 9e5925b0636b3cccfe08f31c0fdc8dbd927772b8 SHA-256: ee216567dd730adea99818a406edade518a230de741844b4672543667e2cff67
214 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with several pointing to known malicious redirector infrastructure and a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. No scripts were extracted, but the PDF structure itself is designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 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.
  • 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://cctraff.ru/strik?utm_term=light+crossbow+vs+heavy+crossbow+pathfinder In PDF document text
    • https://gitinegu.weebly.com/uploads/1/3/4/6/134648864/wotaripolezom.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410976/normal_5faab409b34df.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384468/normal_5fd94bcf87b96.pdfIn PDF document text
    • https://pusenosegunilo.weebly.com/uploads/1/3/4/7/134705238/kugagu.pdfIn PDF document text
    • https://binenivav.weebly.com/uploads/1/3/4/5/134516867/zigadusewideja.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377112/normal_5f9435599a110.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372967/normal_5fcc5bdc6b120.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389384/normal_5fd2fe2dd05a3.pdfIn PDF document text
    • https://zejikato.weebly.com/uploads/1/3/3/9/133997407/wiranewokalotow_funetivot.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc37be016f6d44b07cf02d7/t/5fc9246fb5f59d769393a322/1607017585216/cinergy_movies_amarillo_texas.pdfIn PDF document text
    • https://s3.amazonaws.com/fovezewi/centrifugal_partition_chromatography.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/557f4831-f3ce-4c8c-a27e-8a7e0fd24493/kodovutudijipavidiwovar.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc7b50cd743eb43444af1c9/t/5fd69922267c8d0ace4fd7aa/1607899427513/bow_master_mod_apk_unlimited_gems.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fde987dd61098631976af48/t/5fdf2a5b7f4e6a336730427a/1608460897997/21397033495.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcf1633ca23154c95a442c/1606218083975/tavabodab.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf521208845d09248120d5/1606373915126/prem_ratan_dhan_payo_movie_download_in_telugu.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c675.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC675 5720 bytes
SHA-256: b03b00391b023c4fe6abdb66f54c3a9d35fc356a9c8b8af28fea7f97c50a05a4
font_01_sfnt_off0000da11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA11 10472 bytes
SHA-256: b378166c7d892d2c270713e99086f27f862cb1e0754640479dca8409303fdf4e

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