Malicious PDF — malware analysis report

Static analysis result for SHA-256 6118417b66f2cedf…

MALICIOUS

PDF

71.1 KB Created: 2020-11-23 22:15:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 1fa3eb50f22108f3c6bbcd05f0260cb5 SHA-1: 10c2c1a64f552cee833d515a709d1a0074d1ff63 SHA-256: 6118417b66f2cedf215224f8ebd01d1ad2341d0b7085fb46dc609f9dde8bb6ca
214 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with at least one identified as a malicious redirector. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, contains references to 'permethrin spray walmart' and authoring application details, suggesting a potential lure for spam or phishing campaigns.

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://traffine.ru/123?utm_term=permethrin+spray+walmart In PDF document text
    • https://goraworozegisu.weebly.com/uploads/1/3/4/3/134324811/buzewikodiravi-deraj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387565/normal_5fbb157e61c6d.pdfIn PDF document text
    • https://rivisoni.weebly.com/uploads/1/3/0/7/130739016/2d1905abc62e2a6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/c62f476b-07c6-41c2-93d3-42387957d8f3/wuxafejejavobumogavuzogu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f9be578-e758-4556-bf8c-c4b90d0fc83d/bajizinisubolerurovi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e1f7764-46f2-45cb-9a85-eb2cb0204d4b/94247686236.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6e9c658-7cda-4b7b-926c-5cbb8cdbff35/wolofitezuvinitoworodu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2bfd64e-85c4-4212-b5d5-386f21f5ad33/89207648644.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93503351-6696-4375-a47e-c3b54488a506/30956321631.pdfIn PDF document text
    • https://s3.amazonaws.com/sakaburepagase/gartner_antivirus_report.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f9591ca-826f-4aef-bb3a-497ea1c6fbb6/label_an_insect_body_parts_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ae886dc-37cd-4e13-8b2a-b00223d532fb/payum_puli_hd_video_songs_download.pdfIn PDF document text
    • https://s3.amazonaws.com/rogugagatuf/98265434247.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c9c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9C2 4932 bytes
SHA-256: 9c6272efbb3968d220b934e18571976ab5aba485b037919251e2d54033f679b8
font_01_sfnt_off0000da58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA58 10992 bytes
SHA-256: 6f93d86a45f73acd3a07deaf527fdbd0133bf63f3c63921efa23edc9cc4ff7f5
font_02_sfnt_off0000ffa3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFA3 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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