Malicious PDF — malware analysis report

Static analysis result for SHA-256 97a263a6bcf1308e…

MALICIOUS

PDF

72.6 KB Created: 2021-05-20 08:23:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 95616affba0aa05f4d7185fed07e0317 SHA-1: 96b245e7b63906bcba5b5504bd9cfec4fd98a030 SHA-256: 97a263a6bcf1308e65f275b7a32b39ba92af8498f7db590f64b8e0f5f0d3b4d7
156 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9996

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
  • 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.
  • 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://gimoguvi.ru/strik?utm_term=how+do+you+write+a+cover+letter+for+a+cv PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4470205/normal_603194be212dd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393190/normal_60598af7a1eb2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454051/normal_6026b051057b1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470543/normal_5ff975c0da189.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418574/normal_5ff7b6bc880ef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404503/normal_6065f8544b48c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417213/normal_5fcf5d1f47e8b.pdfIn PDF document text
    • https://dixatuwep.weebly.com/uploads/1/3/5/3/135398053/supevuzesema-foxivogute.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486534/normal_602267e55efff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462974/normal_605ca880d9df8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470678/normal_605639737e506.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482190/normal_602865ead04c5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488139/normal_5fcfedf1bf8f4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368240/normal_6056750e0bf39.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482623/normal_606c368296bdc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475985/normal_5fd84e90df875.pdfIn PDF document text
    • https://xufalawat.weebly.com/uploads/1/3/0/8/130814535/dirininokimolij.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415929/normal_5ff5f82b232dc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426960/normal_600c70ed5a066.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380068/normal_6057082b9509a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370543/normal_6061bd48c4f93.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393019/normal_6000c360e254e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000df9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF9A 5052 bytes
SHA-256: 47ef4f8fb82cc8ada635801397bfcd6423cdec6a6a0969f53079955a8773b1b0
font_01_sfnt_off0000f0f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0F5 10508 bytes
SHA-256: 10167d6efe35b4e85ee1df71f4ef3c9efb81c863c7a57470aede89b9becda926

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