Malicious PDF — malware analysis report

Static analysis result for SHA-256 191adc3b24c14bc4…

MALICIOUS

PDF

67.5 KB Created: 2020-11-21 00:16:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: d57045b704d05f6920166fc16cbfbbab SHA-1: 93299e600da650fe27685c1a57b19ae1438f8242 SHA-256: 191adc3b24c14bc4406c9fe1b8e56f63dbfdf31612aa9113c86c306542cbf2b6
222 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, many of which point to potentially malicious redirector infrastructure. The heuristic 'SE_INVOICE_LURE' suggests the document's content is designed to mimic an invoice or payment request, aiming to trick users into clicking the malicious links. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://gettraff.ru/123?utm_term=chinchilla+for+sale+texas In PDF document text
    • https://cdn-cms.f-static.net/uploads/4376875/normal_5f8ba09072a91.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387582/normal_5fb48d2e193e4.pdfIn PDF document text
    • https://kepefiporewe.weebly.com/uploads/1/3/4/7/134704647/7297662a8ecb3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421983/normal_5f9f26fb65f24.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374366/normal_5f97c5832e8af.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420743/normal_5f9ebb0f90783.pdfIn PDF document text
    • https://begaraga.weebly.com/uploads/1/3/4/6/134652864/torajax-lasunojepobate-zopenasufe-rabupob.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385847/normal_5f9c789224d36.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451762/normal_5fa26fa87c6f4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410018/normal_5f94ea55b8f7a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454438/normal_5faf3ebf87344.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/c2669d4f-1830-4a0f-a263-8b0f7bd59360/maminisafob.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f61b21e0-ce01-456a-ab09-24ff05d83c38/programmable_logic_controllers_5th_e.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c561b7c-793e-45f4-8648-c8939edbcf63/20074795943.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25619b68-3408-42d5-b5f6-577434925490/30978506873.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e11147f-d757-475d-9e12-0a3922477d7a/lajadakirigujoxir.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cb2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB2E 4940 bytes
SHA-256: e0504772a5345418204a626c1544dc319ec0e5a7b09035b659e7d8f245553525
font_01_sfnt_off0000dbf7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBF7 11060 bytes
SHA-256: 81ecd76d232e93a312c6efa3ce5ee1e8c2c1dfb75332417f5b909b1e3b4270b8

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