Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3d7e5819c6d035f…

MALICIOUS

PDF

70.4 KB Created: 2020-12-30 02:06:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 1ce6de1b21ee20bb2db4f61ce3c9e288 SHA-1: be5ce424178120977573d7cc78f8e3c2a9641653 SHA-256: f3d7e5819c6d035f25d8173e553a8d3158dbc2907da92d6c2a30621a28b45c16
186 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm used for phishing or malware distribution. The document body, though heavily obfuscated, contains text related to 'Naruto world map minecraft download', likely a lure to entice users to click on the embedded malicious URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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.
  • 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://traffnew.ru/strik?utm_term=naruto+world+map+minecraft+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4411503/normal_5fb9f96726ea4.pdfIn PDF document text
    • https://jasazifo.weebly.com/uploads/1/3/1/4/131437377/8f6691065860e.pdfIn PDF document text
    • https://ganalazukomej.weebly.com/uploads/1/3/4/7/134714395/7569589.pdfIn PDF document text
    • https://levapexufusetij.weebly.com/uploads/1/3/4/9/134904519/2b1d44.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365555/normal_5f87a63c8b0bd.pdfIn PDF document text
    • https://viweposedijul.weebly.com/uploads/1/3/1/0/131070314/notag.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465543/normal_5fc51f099d7a4.pdfIn PDF document text
    • https://bemafaparad.weebly.com/uploads/1/3/2/6/132681832/febikobute.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ebe680e-3599-4ca8-87e9-8a5d45a5a515/29701331361.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a10c81df-e515-4092-8af7-89bcf360f0ca/vunogunurimed.pdfIn PDF document text
    • https://s3.amazonaws.com/kugelilizibuwum/88062488154.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e9b7964-66b9-4eff-9b34-a03486ee2146/zurezanixilejojemawitikav.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_off0000cfc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFC8 5184 bytes
SHA-256: 83291645dad612dfa3bb3d8580af4aa2b062739447849458761e1858c462d58c
font_01_sfnt_off0000e16f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE16F 14212 bytes
SHA-256: 19f0589857fc68f37bb331fe4e9e5c3b781c28c5dffd831b85fa2d368e641da9

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