Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d24d2d445afb953…

MALICIOUS

PDF

69.0 KB Created: 2020-11-20 15:35:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 8ffffaa1741f99a3d87963e6ae0c9ab4 SHA-1: 78205e222b9475b8c38c97af4f524c6ee08c3dc7 SHA-256: 8d24d2d445afb953b79c213001851b27b71144fc0baa5b5b5eb04845c4385891
214 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, 'ggtraff.ru', which is likely used to distribute malware or phishing content. The document also features a large number of external PDF links, suggesting a link farm for SEO manipulation or to host additional malicious files. The ML classifier and ClamAV detection strongly indicate malicious intent.

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/123?utm_term=tinder+gold+apk+mod+2020 In PDF document text
    • https://luvepuxoworusoj.weebly.com/uploads/1/3/4/6/134660421/kodinukiwekijobafis.pdfIn PDF document text
    • https://riwisasivituw.weebly.com/uploads/1/3/1/0/131070703/eb5eb0c.pdfIn PDF document text
    • https://putigazabikikim.weebly.com/uploads/1/3/2/6/132682718/4c7af57c7d5b9.pdfIn PDF document text
    • https://giduwuxudi.weebly.com/uploads/1/3/4/7/134716719/3360620.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/c35c2c7c-9bb5-4d7b-babc-df09b9ea6011/carta_para_mi_novio_manualidades.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/45dadb6b-64f9-49b3-9213-9e7542af244b/kezuletitunupa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3333fe9-052e-4b58-a7b7-8764bcaec20b/2514304266.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c93f84f-1aed-4d69-9aac-4957f9c9b926/8725108634.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8098bb1a-4635-43b7-93ea-f28b956864e3/wodejipujetakajozepo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eeaa0763-eafa-4e46-af26-45cc65a9583d/39191533110.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a0623e4-0015-4ec8-a4a1-e0a1d346e454/star_war_stop_motion.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_off0000d11f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD11F 5388 bytes
SHA-256: 6058906ca759a6846fc34428d61440fe9eadadae410993e805593d18c49563cb
font_01_sfnt_off0000e362.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE362 10672 bytes
SHA-256: 420ee2eed41c8013123f86b40f337415d34e29507877633fc571c81840252821

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