Malicious PDF — malware analysis report

Static analysis result for SHA-256 8571afc01903cdeb…

MALICIOUS

PDF

62.7 KB Created: 2020-11-10 20:52:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: 95e1b618e2a55349fa66b2f38793c239 SHA-1: 88545158d559998786070fad77a37fd6e036da7c SHA-256: 8571afc01903cdebb0bf9d415973fd0f7e6535c443ea2795f5f63cdd727b9c4c
244 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
  • 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.
  • 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.
  • 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://traffking.ru/123?keyword=earn+to+die+unblocked%252Fhacked In PDF document text
    • https://bazulerijodinib.weebly.com/uploads/1/3/1/8/131856415/gaxovebexekuti.pdfIn PDF document text
    • https://nobigifawu.weebly.com/uploads/1/3/4/3/134310244/af55e5be016.pdfIn PDF document text
    • https://bakurisevujukuj.weebly.com/uploads/1/3/4/3/134368754/nududadebapim.pdfIn PDF document text
    • https://ralerafuzirepob.weebly.com/uploads/1/3/4/3/134386916/1407659.pdfIn PDF document text
    • https://sunakixekorej.weebly.com/uploads/1/3/4/3/134376052/76231453e62fcb.pdfIn PDF document text
    • https://mipirizu.weebly.com/uploads/1/3/2/6/132682564/e085d89a2.pdfIn PDF document text
    • https://zukamukenipebo.weebly.com/uploads/1/3/1/3/131380388/aa0a9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jedobufudajewu/darkly_dreaming_dexter_download_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eeb141be-db02-4a33-a564-6b6823d611ab/the_humanities_culture_continuity_change.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7247901a-fcd9-45cd-a232-dcbd7ce80ed2/60369718012.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/96cfc7e7-1a75-4baf-9542-c045bde59a99/lafemujeluwovu.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_off0000b9f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB9F7 5044 bytes
SHA-256: cc6db594de6fb2a7f5f11d5cc7d24af69a3ca681a12cd407fe72debf253d77ad
font_01_sfnt_off0000cb28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB28 10284 bytes
SHA-256: 39d555ae80245ce6543985f13bed748925d1505d6ddc56ed9eb5c4a197a7ce3b