Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b30d9ee0fff97c9…

MALICIOUS

PDF

71.1 KB Created: 2021-03-03 00:16:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 74c67bbfd8256b01d63bf361764540e7 SHA-1: a19f63b1d742f1c9e0641403a636f68eb1a23539 SHA-256: 3b30d9ee0fff97c916c3c5a988ba9d899e1791e92a6f81fb832056e4134159e3
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • 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://fokemale.ru/wix?keyword=gtunes+music+v8+apk PDF link annotation
    • https://dutofubexel.weebly.com/uploads/1/3/4/6/134631161/sofumikumaxekisadu.pdfIn PDF document text
    • http://ig-objectionform.com/35945855437okd19.pdfIn PDF document text
    • http://trend-sales.fun/42847513272jnpnc.pdfIn PDF document text
    • https://salobomuxalevi.weebly.com/uploads/1/3/1/0/131070078/bedonevudo-jodipuriw.pdfIn PDF document text
    • https://fukenavu.weebly.com/uploads/1/3/0/8/130813663/vuxazif-mukokubevowata.pdfIn PDF document text
    • https://cdn.sqhk.co/pasudajuwesa/AVtjicd/65115789719.pdfIn PDF document text
    • https://wizejuxexena.weebly.com/uploads/1/3/4/6/134655833/ribulufa-galutivevof.pdfIn PDF document text
    • https://cdn.sqhk.co/norejasiwiza/heL8bhi/femobewivemowufi.pdfIn PDF document text
    • https://giduzuzetedeze.weebly.com/uploads/1/3/4/8/134853145/8190628.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://labapok.rf.gd/mandated_reporting_laws_in_missouri.pdfIn PDF document text
    • http://lazunebenak.epizy.com/62236954816.pdfIn PDF document text
    • http://xajetizefo.rf.gd/12930501667.pdfIn PDF document text
    • https://s3.amazonaws.com/debamijizozexo/autoformation_telecharger_uptobox.pdfIn PDF document text
    • https://s3.amazonaws.com/fulazelof/pemuvegiwoga.pdfIn PDF document text
    • http://fefekug.rf.gd/jinoxazofemubugikutofipa.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_off0000da31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA31 5300 bytes
SHA-256: b39f5247455a3c0e1bcc750f8edf4099171d28ba65f58f9ddd54aafc31a4546e
font_01_sfnt_off0000ec3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC3D 10240 bytes
SHA-256: 8c3de08ff2dd13ed42662afd1124e55bae7ce845debc868468279a63a42bd719