Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b1bbe1daa6ecae0…

MALICIOUS

PDF

73.4 KB Created: 2021-03-01 20:24:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 0ec78ac4bafe1f4e1c6bdbd2c0853908 SHA-1: 5d362907acac7672355362bc17f1469b649086f0 SHA-256: 9b1bbe1daa6ecae0442012c1f4fb104632b393cb840906ea0a54d9899fa92785
184 Risk Score

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 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=wuthering+heights+setting+anagram.of+room In PDF document text
    • http://presentinsta.online/nderungsrate_mathe_formelkrkkt.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366043/normal_5fe6a9000574f.pdfIn PDF document text
    • https://pefodiral.weebly.com/uploads/1/3/4/4/134476409/1924aea457e.pdfIn PDF document text
    • http://toolsbestpricemicrometer.site/636555208600sg75.pdfIn PDF document text
    • http://rezotu.xyz/new_testament_timeline_chartejwdp.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417325/normal_6032e7a36e50e.pdfIn PDF document text
    • http://digitaltoolsfor.xyz/download_collarless_usgs_topo_maps0wyr2.pdfIn PDF document text
    • http://bottlechainworld.com/tupac_hit_em_up_free_mp3_downloadvjv6i.pdfIn PDF document text
    • http://idealicaitalia-ufficiale.site/98432733236tkjqf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366622/normal_5ff5fd3710cee.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374379/normal_600102b0d73e4.pdfIn PDF document text
    • http://kellys.space/acronis_true_image_size5eu7v.pdfIn PDF document text
    • http://mon-cmbretagne.best/73693452447jmvju.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450415/normal_60338b8c7521e.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/gosete/sekiloxanovu.pdfIn PDF document text
    • https://s3.amazonaws.com/satuja/lexijewa.pdfIn PDF document text
    • https://s3.amazonaws.com/sazomo/roland_tr_808_vst.pdfIn PDF document text
    • https://s3.amazonaws.com/wegugus/tollywood_actress_hd_photo.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_off0000e203.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE203 5196 bytes
SHA-256: ba4cc6f98ab5e51ee26dcf0ef3c145887556442541140b9d9556715a89569d9a
font_01_sfnt_off0000f39d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF39D 11108 bytes
SHA-256: fe786cd9a489478e96b0035f3d5fc5871660720141b6e6203581bb94d2fafd36