Malicious PDF — malware analysis report

Static analysis result for SHA-256 38e8d84dbedf1687…

MALICIOUS

PDF

70.9 KB Created: 2021-02-21 07:50:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 3b7b3c5f88c518e45b2e268021e98366 SHA-1: 7518e3ec8e8f27ee3b78b51e52cd3f84b1dc4173 SHA-256: 38e8d84dbedf16872844e5962b29c5cc4d87f3b91bad3d120fd43f8beb2ee44f
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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://crophysi.ru/wix?keyword=minecraft+pe+apk+13.1 In PDF document text
    • http://help-service-support.com/850560173750gaut.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366040/normal_5ff829b2bd976.pdfIn PDF document text
    • https://cdn.sqhk.co/karapenakozi/bZhhcia/21931224000.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414679/normal_5fecee339821a.pdfIn PDF document text
    • https://vewenikeluw.weebly.com/uploads/1/3/0/7/130739128/nevatubavawug-davek.pdfIn PDF document text
    • https://cdn.sqhk.co/xenivoronizu/gvRkgjE/pinball_machine_gamestop.pdfIn PDF document text
    • http://top-agent.ru/what_is_storage_in_records_managementbuyrk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390641/normal_600b3b7d2dcd5.pdfIn PDF document text
    • https://cdn.sqhk.co/gijesali/czp5Ujd/dumigimerodosup.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456372/normal_6001d091d7791.pdfIn PDF document text
    • https://mipikarekegimo.weebly.com/uploads/1/3/1/6/131606279/3902700.pdfIn PDF document text
    • https://cdn.sqhk.co/bujerinalo/gEQrjcy/sim_empire_pc_download.pdfIn PDF document text
    • http://auto-agents.space/reflector_3_crackhloj0.pdfIn PDF document text
    • https://cdn.sqhk.co/letinumi/NicOhgS/31897026927.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375194/normal_5fdc44596b2c1.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/sagotomagin/kamadugadowupobofozarize.pdfIn PDF document text
    • https://s3.amazonaws.com/pasawe/47004698136.pdfIn PDF document text
    • https://s3.amazonaws.com/fedure/kutuzivalimorupafut.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_off0000d9c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9C2 5116 bytes
SHA-256: 19c6ab03e8011d9fcb0606d3ce3ec29f71cf4e49c82598672363f8e950d676f2
font_01_sfnt_off0000eb5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB5B 10272 bytes
SHA-256: aa328cba56734c7bf821d9c04561fa98df1c3954d13fbccc34ef1411128d4c84

Open this report in the interactive analyzer, or submit your own file for analysis.