Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9c7fed65c82cadb…

MALICIOUS

PDF

73.8 KB Created: 2021-03-23 18:23:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: a40d408d66e0778b31bcce544660bebb SHA-1: 5e7d44de4cdfa31e4d3e482eeaf6f24f4fa53ea3 SHA-256: c9c7fed65c82cadbb06dc540afabc413084fd50e6c8672cac3cb8ce22b7c14e3
186 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://leonvi.ru/wix?keyword=kodak+easyshare+m580+manual PDF link annotation
    • https://zegikawa.weebly.com/uploads/1/3/4/6/134640481/moteribixuxel.pdfIn PDF document text
    • https://polavimiwusirew.weebly.com/uploads/1/3/2/6/132681763/8722073.pdfIn PDF document text
    • https://rakatifuz.weebly.com/uploads/1/3/5/9/135964199/1866463.pdfIn PDF document text
    • http://gagimubu.mywebcommunity.org/4520591002.pdfIn PDF document text
    • https://cdn.sqhk.co/wosepimi/xw2iavj/color_splash_hd_wallpapers_1080p.pdfIn PDF document text
    • https://suzipokenefuju.weebly.com/uploads/1/3/3/9/133997801/4e9ef107e74365.pdfIn PDF document text
    • https://doliwejivus.weebly.com/uploads/1/3/4/3/134353379/revojud-fowuxunodirub-lenuvu-petexo.pdfIn PDF document text
    • https://nogisapu.weebly.com/uploads/1/3/1/4/131453993/wopusonorolaf-gumerukasalav-rufofivedap.pdfIn PDF document text
    • http://fuxezaboxekave.scienceontheweb.net/77872767022.pdfIn PDF document text
    • https://safamitiwifiro.weebly.com/uploads/1/3/0/7/130739579/xizifatasukinid-goselanifowaju-sebip-ronamulib.pdfIn PDF document text
    • https://nakubinigana.weebly.com/uploads/1/3/1/3/131379761/3395696.pdfIn PDF document text
    • http://ligumexijigab.getenjoyment.net/amphotericin_b_nephrotoxicity.pdfIn PDF document text
    • https://ribarifi.weebly.com/uploads/1/3/4/2/134266405/riloxotem.pdfIn PDF document text
    • https://cdn.sqhk.co/sedazozesufu/sJogQgi/66604486650.pdfIn PDF document text
    • http://gosunenibunale.getenjoyment.net/25446358087.pdfIn PDF document text
    • http://dikegebe.mygamesonline.org/acquired_cystic_kidney_disease.pdfIn PDF document text
    • https://zoxexakaxikat.weebly.com/uploads/1/3/0/7/130739387/2883766.pdfIn PDF document text
    • https://cdn.sqhk.co/nifijagik/3ihhjjj/casio_edifice_eqb-_500l-_1aer_manual.pdfIn PDF document text
    • https://cdn.sqhk.co/wowedofu/INgfmji/vikikodajegili.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zotubune.myartsonline.com/14140407648.pdfIn PDF document text
    • http://vimixof.onlinewebshop.net/vegavojeper.pdfIn PDF document text
    • http://wivaxodi.onlinewebshop.net/65628616158.pdfIn PDF document text
    • http://gubawakelu.onlinewebshop.net/tugojugedodomowapi.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_off0000e213.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE213 5660 bytes
SHA-256: 1898c941f51854f29390e28ab2242b48cea694aac3e955a3a62f058964b69a3e
font_01_sfnt_off0000f52c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF52C 10904 bytes
SHA-256: 627c824d0dace506b838b4acff44c276232e8aa6f3d2a91e0d3839f3775156de

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