Malicious PDF — malware analysis report

Static analysis result for SHA-256 6777575932cb226e…

MALICIOUS

PDF

107.7 KB Created: 2021-05-23 01:33:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 32ce4c0c1bf923e48fabddd5c2966e1a SHA-1: 91a0a48c88e102716152429237c3902a0615b5a7 SHA-256: 6777575932cb226e8bd0268b480d53a71064deacc33d806c9ac31ae11ad3a374
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains a large number of external links pointing to disposable hosting services, indicative of a link farm designed to distribute content or redirect users. The presence of a 'download' button lure and ClamAV detection as 'Pdf.Phishing.Trojan' strongly suggests a malicious intent to deceive users into downloading further payloads or visiting phishing sites. The ML classifier also flagged this PDF with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://zajinet.ru/strik?utm_term=sherlock+holmes+sinhala+books+chandana+mendis+download PDF link annotation
    • https://tebifuwufarul.weebly.com/uploads/1/3/4/8/134886387/8029003.pdfIn PDF document text
    • https://pebogifi.weebly.com/uploads/1/3/1/4/131438694/24984a290.pdfIn PDF document text
    • https://sisufowikukutu.weebly.com/uploads/1/3/4/3/134311685/kibukuruneruk_zofalegedebimiz_begivefidereb_sawogom.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476445/normal_600e4391d127c.pdfIn PDF document text
    • https://latibexuwer.weebly.com/uploads/1/3/0/7/130776356/fixuzile-mizuranidaguk-vajowujabawu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489247/normal_604d83f7b6214.pdfIn PDF document text
    • https://lukafove.weebly.com/uploads/1/3/4/6/134655473/7608474489c5b.pdfIn PDF document text
    • https://ninujesifig.weebly.com/uploads/1/3/1/4/131453022/901f84d3f56bdb3.pdfIn PDF document text
    • https://rafopovuweke.weebly.com/uploads/1/3/2/7/132740485/wimejitewi_suvumusir_venesi.pdfIn PDF document text
    • https://gagodizuw.weebly.com/uploads/1/3/5/9/135965264/7007165.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454051/normal_5fdfc370ec830.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494440/normal_6068b27c62b28.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445564/normal_60054b0317a76.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486778/normal_5fd19ca393694.pdfIn PDF document text
    • https://kuvijoxujav.weebly.com/uploads/1/3/4/2/134266993/8990165.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366050/normal_6010ce0287f64.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/570e708c-442d-443f-be7e-8f2e24e4ac32/liftmaster_3800pld_smart_control_panel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc04e909-a78d-444e-b449-d5f51c9ba90d/giweloruzolenew.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee05a79b-a754-4fc1-9c93-27bf17cd7068/mortal_engines_full_movie_google_drive.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
    • http://sinhala.sourceforge.net/In PDF document text
    • http://sinhala.cvs.sourceforge.net/viewvc/*checkout*/sinhala/sinhala/fonts/CREDITSIn PDF document text
    • http://www.gnu.org/licenses/gpl-2.0.htmlIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fa8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA8D 5576 bytes
SHA-256: 574811685649132f6e768a4d572356b12102837f27679864c305c864b592553b
font_01_sfnt_off00010d27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D27 50504 bytes
SHA-256: d2c2b838437bf38b33c8d93b71ac4d330ca0a806d48ef4aa7c2f78ee211c650d
font_02_sfnt_off00017875.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17875 10836 bytes
SHA-256: af8dc3c6869695c3818dc83be1ad6c013f078bf8308fd0c5883423506fec3ac2

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