Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d2e936962e5cc71…

MALICIOUS

PDF

61.8 KB Created: 2020-12-19 05:50:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 0fb942dbff53855bca4cbf5b5a90e6d6 SHA-1: 85a7a26a140bd3800428956b28aa71cb6d570596 SHA-256: 1d2e936962e5cc71ed90928335463125653f0e9df184a7a89a58c10678e725a3
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 critical heuristics indicating it points to known malicious redirector infrastructure and a link farm. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a malicious document designed to redirect users to harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://ggtraff.ru/strik?utm_term=3.5+applied+statistics In PDF document text
    • https://zunenora.weebly.com/uploads/1/3/4/7/134713213/javuvegi.pdfIn PDF document text
    • https://rebumazezip.weebly.com/uploads/1/3/4/8/134860465/zonipisodijumona.pdfIn PDF document text
    • https://fuwewarudizikip.weebly.com/uploads/1/3/4/6/134644733/zogofixazus.pdfIn PDF document text
    • https://sebanibukuj.weebly.com/uploads/1/3/4/3/134354661/3233741.pdfIn PDF document text
    • https://betutinixe.weebly.com/uploads/1/3/4/4/134481053/4103213.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/0189e67c-a154-49ce-ad29-e70de5478ad9/happy_birthday_stephanie_cake_images.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc7b0c8c43b1711988c2de8/t/5fd1674923f2866aa37c4909/1607558986610/mepat.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6e3c89ea50d41209e1b45/t/5fcd8a4424c49707d338060f/1607305796478/81391555393.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc66db9a8793968642e0201/t/5fc90fc8559adf3c25e3508c/1607012297985/snow_skiing_in_western_north_carolina.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5414fbe9b69395127809a/t/5fc7dd374bde7d3c2ce3b490/1606933815949/average_mechanic_salary_us.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7998a355-11bb-4f44-96a2-f4207484d81f/how_to_find_iron_in_conan_exiles.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/898ecb86-39a6-4ad5-a05a-5e32299151da/ashokan_farewell_flute_sheet_music.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1c96f15-0d3f-4111-a92b-d1272937e248/welomukigeko.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44cb7ec4-a486-4a1f-b8a9-83d356a5a196/70524345299.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e082429-e09d-4219-8838-bc7064e8f480/francine_farkas_sears.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_off0000b5ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB5AD 5196 bytes
SHA-256: 736b3dc01d9236b1b35a9a2e2a676dc72518a24eeeec226c3c68a31a9eab5f46
font_01_sfnt_off0000c773.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC773 9820 bytes
SHA-256: e88b5cb1b1734a0e72ac45c7907e6021491437ebc832a9b94df87b3f971453bd

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