Malicious PDF — malware analysis report

Static analysis result for SHA-256 5237bc03aeaf28c7…

MALICIOUS

PDF

100.8 KB Created: 2020-11-13 19:12:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b624bf22774f58bc2b57c42214d060ca SHA-1: 5398bc9166ee76a02073b1b0e3d7549b58551d2e SHA-256: 5237bc03aeaf28c7fdc14ad3c37d9abd36f2397586436df8c948629ec6637de5
156 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including PDF_SEO_LINK_FARM and ML_NYX_PDF_MALICIOUS, indicating a high likelihood of malicious intent. The embedded URLs, particularly 'https://trafftec.ru/123?utm_term=dino+run+unblocked+76', suggest a lure to a potentially malicious site. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports the phishing and malware distribution nature of this document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • 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.
  • 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://trafftec.ru/123?utm_term=dino+run+unblocked+76
    • https://cdn-cms.f-static.net/uploads/4393893/normal_5f9b005a17cbb.pdf
    • https://bajusumuke.weebly.com/uploads/1/3/2/7/132741128/libomexados.pdf
    • https://cdn-cms.f-static.net/uploads/4408993/normal_5f9e61e2ab488.pdf
    • https://cdn-cms.f-static.net/uploads/4370063/normal_5fa8f3aac3298.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/8ea97a45-949b-4da3-b806-13ecc317d6b6/peganibu.pdf
    • https://uploads.strikinglycdn.com/files/0fb5957d-96f6-47da-b28f-0d3a26bedabe/75096322732.pdf
    • https://uploads.strikinglycdn.com/files/263d151b-d886-4f77-813e-02c8645e5da3/lisivaminadavirusirexava.pdf
    • https://uploads.strikinglycdn.com/files/2f32ea0d-9fe1-4d54-a3aa-8fb269052516/dojiwepamadovegimelov.pdf
    • https://s3.amazonaws.com/posufij/preinscripciones_2020_kinder.pdf
    • https://uploads.strikinglycdn.com/files/5f4ec871-bd81-4384-8424-4dcf530de000/david_childers_fl.pdf
    • https://s3.amazonaws.com/jufowokedunod/list_of_feelings_and_emotions_and_their_meanings.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012bf7.bin
6d82a9034a8d9314b76ed7dcc2017fa698ce3f4657486336d8fbb56f41d52b05		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12BF7 4784 bytes
font_01_sfnt_off00013c37.bin
5cd68c5a09f51b90ba6b1c594a7c14806848157f87b95b8f0a4a353a6fb60b06		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13C37 5360 bytes
font_02_sfnt_off00014f81.bin
ff8f4f29edc4d243f5b0cf927a7cc8d08c659bf3567915a5034025a99f7df322		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14F81 11988 bytes
font_03_sfnt_off00017813.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17813 4324 bytes

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