Malicious PDF — malware analysis report

Static analysis result for SHA-256 97e4b98f6e8f61d6…

MALICIOUS

PDF

71.7 KB Created: 2020-12-05 19:56:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: af958d7a6c723e0345d4f668dc6b6439 SHA-1: 8704ceefe74822844275e400b538d2dbc2ed00e4 SHA-256: 97e4b98f6e8f61d6f35dd976025300935501468c8e6e1be0aa79ed77e7764860
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 at least one pointing to known malicious redirector infrastructure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The document body, though heavily obfuscated, appears to contain text related to the embedded links, suggesting a lure.

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 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://traffine.ru/123?utm_term=growing+fruit+trees+in+albuquerque In PDF document text
    • https://kukanoli.weebly.com/uploads/1/3/4/6/134641169/40a660.pdfIn PDF document text
    • https://xavoxoxuda.weebly.com/uploads/1/3/1/3/131379246/buxilojax.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/fd7c1c9b-2e8b-4ea6-a5e5-9179691f22df/how_to_plot_inequalities_in_mathematica.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3828bf1a-3883-41bf-80cc-d74127ec13bc/jujaro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/45dc49ad-1e2b-4cdf-8e44-cb3efb61fb30/jopulokajerozufewored.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/574256e3-6763-44ce-8ffa-e3bc3b3f28ec/34639275642.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a845e2d1-036c-4314-a32e-33219291284a/car_parking_games_unblocked_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea43bf8d-ec92-4112-951a-946d70f1a503/physiology_of_behaviorneil_r._carls.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5087bec0-4be9-4d26-9594-b709a0b1280f/test_vak.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc545c33dfdd95b60f1f620/t/5fcbc3db7ab0f364abb4ae70/1607189467840/28070996457.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08c40d09-4db8-431e-83bb-522e24c4f4e7/conan_exiles_radium_torch.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbfe895e5c7695ca99606f9/t/5fc17c50f81c9a2a0cda32e9/1606515795493/74141605062.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3aebd685-4e67-45ec-9928-a6c7b499df2f/pafonotovidajupeviwujaz.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_off0000d9b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9B6 5324 bytes
SHA-256: ffdee41cdef8f3e2ec9400ebe0064509ff76ec50050d325de07c95b16b36077b
font_01_sfnt_off0000ebfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBFD 11460 bytes
SHA-256: 50c88eee249f2c285f49bc5a1349c3b1704946b467d1c3f1113eeeeddf579d81

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