Malicious PDF — malware analysis report

Static analysis result for SHA-256 49debbecd3c2580d…

MALICIOUS

PDF

71.2 KB Created: 2021-02-21 19:55:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 59b85f029e95ce8faca77f874820d042 SHA-1: ab8b8fdb951797612538215f9e59d1f4108b9b77 SHA-256: 49debbecd3c2580d3f582a9a8ea048afaa04e711009ec81ea6e471d70643f760
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://baarspo.ru/wb?keyword=brown%20and%20tan%20long%20haired%20mini%20dachshund PDF link annotation
    • https://cdn.sqhk.co/gokarunedod/L8wLehd/82190501124.pdfIn PDF document text
    • https://cdn.sqhk.co/xejadukoxeta/fjczgi9/78254238643.pdfIn PDF document text
    • https://biziremidawa.weebly.com/uploads/1/3/5/3/135397591/fapilisevusonumejit.pdfIn PDF document text
    • http://shop50off.info/62685096060ftrhe.pdfIn PDF document text
    • https://zudupati.weebly.com/uploads/1/3/1/8/131856533/5315203.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488141/normal_6011ace62dad3.pdfIn PDF document text
    • https://cdn.sqhk.co/xagaxubibiz/qZhhhfU/taxuwemadekij.pdfIn PDF document text
    • https://ninapivojejuru.weebly.com/uploads/1/3/0/7/130775346/wubijagaf_maxen_lofer_nebaforaxofo.pdfIn PDF document text
    • http://study-english-04.space/b._ed_entrance_syllabus_2018kdsc6.pdfIn PDF document text
    • https://cdn.sqhk.co/bidogefapo/UFi4Sgc/touch_n_go_ewallet_gsc_promo_code.pdfIn PDF document text
    • http://mynasert.online/16564721019wjue2.pdfIn PDF document text
    • http://alcexpress3.xyz/basic_vba_excel_tutorialspzf0.pdfIn PDF document text
    • https://japipimimobuxi.weebly.com/uploads/1/3/1/0/131071183/5380478.pdfIn PDF document text
    • https://cdn.sqhk.co/juvowisire/UJGsifk/jefemuwisazesigewomeg.pdfIn PDF document text
    • https://budasanufewe.weebly.com/uploads/1/3/5/3/135323580/15707.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d9d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9D2 5496 bytes
SHA-256: cf5be3ddae47375d87b8c2316814d6a83fc03d7018c5b66a54729ae0162c03ac
font_01_sfnt_off0000ec68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC68 10428 bytes
SHA-256: 4922f057191023f8ea77e85d024952ca4c4cb3d81b4e9c6173daba144ed04d62