Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc48c610493ffcd5…

MALICIOUS

PDF

73.3 KB Created: 2021-03-08 06:43:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 8db123c2c515d1a0d34cdb5bc5c018f5 SHA-1: 79e46cdd4927a5eae9e7d77d7ad54b24b6bbe597 SHA-256: dc48c610493ffcd5c26de272ad80f76762c33541fe371ac9b1082aab32bbd742
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://jacksth.ru/123?utm_term=samsung+mobile+best+model PDF link annotation
    • http://wiwovurezibaso.getenjoyment.net/54071182778.pdfIn PDF document text
    • https://mobasukirogejus.weebly.com/uploads/1/3/1/4/131453019/116335c.pdfIn PDF document text
    • https://mazekijaxok.weebly.com/uploads/1/3/1/4/131453602/maxamosunurokiboda.pdfIn PDF document text
    • http://dizurexemubegog.mygamesonline.org/39537741464.pdfIn PDF document text
    • https://fusofopafufet.weebly.com/uploads/1/3/5/2/135294951/dakanezunekuwu_xuxozemekoxe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485436/normal_601cb1ac4038d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368979/normal_5febefe55f67e.pdfIn PDF document text
    • https://jaluburevajag.weebly.com/uploads/1/3/0/8/130874017/zijixudupavejemojide.pdfIn PDF document text
    • https://nudadisaxoge.weebly.com/uploads/1/3/4/0/134018155/1758571.pdfIn PDF document text
    • https://lovaxases.weebly.com/uploads/1/3/4/6/134685664/lakigofivi.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/93af05cb-e82c-49f6-b275-a3d0b59141ef/modexowiw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/98630455-55e5-423a-a677-506c3ba4ac26/rock_band_4_guitar_not_connecting_ps4.pdfIn PDF document text
    • http://maduzelur.epizy.com/94183633306.pdfIn PDF document text
    • http://vowipinarofesax.epizy.com/best_motorcycle_accessories_shop_near_me.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4521deff-e81a-4706-a521-2ae06c489265/how_to_install_sketchup_2020_for_mac_catalina.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c34b42e0-e9a3-4009-b875-b3af5ba17159/xenemutapivizuzigajeven.pdfIn PDF document text
    • http://pixagikaw.epizy.com/market_cap_on_balance_sheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf99f95a-c4f5-4699-a2ca-6081ee0c53ff/39707131062.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_off0000e2a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2A1 5292 bytes
SHA-256: 351c83d897c5fd1adf6e80e510e9a35eb1dd0e769d2a52b1a08d62e34459973b
font_01_sfnt_off0000f489.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF489 10636 bytes
SHA-256: 92470e72b5ddab7d196b12c8a27c4c039ba9f657ff6fbd21cdf6da062db555a4

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