Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c9d80e013034582…

MALICIOUS

PDF

66.3 KB Created: 2020-11-23 06:51:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: d02a7d311e63e8dcf872ab65b3ae3b96 SHA-1: 25ec886adc3c6f0eb4857b1388644afe54778657 SHA-256: 0c9d80e01303458298211c04ba4dc4a4f994d4310cba96b7db1f1aae276d4ca7
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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.
  • 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://gettraff.ru/123?utm_term=vertical+horizontal+and+oblique+asymptotes+worksheet In PDF document text
    • https://cdn-cms.f-static.net/uploads/4410216/normal_5f9421bd58249.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384035/normal_5fb32f45bf10b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375353/normal_5f91ab8e13f9e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382414/normal_5f8d9bac83e63.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In 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/a4bc0d0c-351c-4d37-919d-f22002bd0d25/30710551715.pdfIn PDF document text
    • https://s3.amazonaws.com/jewizopukuni/mp4_movies_marathi_movie.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3255dbe8-84af-4561-8987-df48486fd4d3/8304218650.pdfIn PDF document text
    • https://s3.amazonaws.com/suzixegazunow/44385161169.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/16333697-51f1-4205-8142-bf83e6a92138/lepexizazejavorasipuv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d9b2aa5-56fd-4869-9751-ad9cc0059830/dexojirup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0bd0b3a5-6905-4474-acff-c748091f2ceb/tiduv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/58251da2-0936-49e7-a9fe-816d5ab74057/62518963428.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db43747b-943b-48ee-8e47-b6e919c0ebc7/14845609187.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc8b7761-7ef2-4217-9629-839991630ca0/68958038113.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a4c0079-1982-4c63-8c46-395b41b643c4/67190554147.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/242da753-668e-4f47-a840-94765de6d03c/godekin.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

Related samples 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b809.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB809 2716 bytes
SHA-256: d7218af28ef88fb5e8b10886ef222f9cd95ab23b11c88bf2f84acacef254e405
font_01_sfnt_off0000c3de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3DE 5852 bytes
SHA-256: f0b27360e6c98837f51e79944ce34fe303fc73971610f27865ea3529a6002323
font_02_sfnt_off0000d7b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7B6 10412 bytes
SHA-256: 8b96d5cf160be8e6f28c678968d0aeac65ac2a001ab60bdefa0da421f9a212e1

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