Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d7717bc27ded33c…

MALICIOUS

PDF

62.4 KB Created: 2020-12-23 13:01:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 2cd8307d164c2351bf83bf7d09725563 SHA-1: bfda5a14f34c8d59c7d223f3b6ef0b1a4a1ff42d SHA-256: 9d7717bc27ded33c88bde833d32a41265160d0a46d741bb6ac75ebb0ef4a872e
214 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file contains a large number of embedded links, many of which point to known malicious redirector infrastructure. The heuristic firings indicate a malicious redirector and a PDF link farm, suggesting the primary goal is to drive traffic to potentially harmful websites. While no scripts were explicitly extracted, the presence of numerous external links strongly implies an attempt to lead the user to malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffmen.ru/strik?utm_term=soccer+manager+games+free+online In PDF document text
    • https://banukusisazej.weebly.com/uploads/1/3/4/8/134893357/55ce21fab28916.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490380/normal_5fdb19c310c0d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373776/normal_5f8c8e7c0524e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381098/normal_5f987f8e9fa60.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376610/normal_5fbf5f5f91d04.pdfIn PDF document text
    • https://mitixofixomu.weebly.com/uploads/1/3/4/3/134333727/watid.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372696/normal_5fc5ae1317c41.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416510/normal_5f9f8bbae778d.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/11dd369c-c62c-4418-ad3d-fd1225c594b9/fipasiduvofinojibaja.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/506692cd-4223-429b-8570-00474520fd44/code_complete_2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31e48fd5-c6b2-44c6-a253-677afa97629c/atlanta_free_chat_line_numbers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80e633f0-88a7-4fcd-95ac-2a3aa0816a45/xurupokabosugekolejidita.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e27d39c-76df-447b-84e7-19eb634bd98c/el_arte_de_la_seduccion_libro_robert_greene.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c477e7ba-c193-45cf-9174-75c8f9a737b2/japewazikuruzodo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/caef405b-499f-4bc3-8643-d553518c3bf3/kerudazukifalebine.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1a1372e-ebe7-4624-8e3f-a940696b6f49/69290467769.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9dba38c1-0dac-49a3-a7f4-7879d352386c/masked_cartoon_characters.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/576b5c27-1568-4822-9896-9291f82890ae/bodijiwutedaj.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_off0000b830.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB830 5304 bytes
SHA-256: 9cf845f9699adccd8202d4584ebd59ebfa8d31eb3d0c97a93c5eeb8b7d4747d2
font_01_sfnt_off0000ca26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA26 10016 bytes
SHA-256: 50b72459977a494c85ebbe3d59fa14c5af83f72b9c6af197579cf2c2aafb9c8b

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