Malicious PDF — malware analysis report

Static analysis result for SHA-256 102ae0b04aba60b4…

MALICIOUS

PDF

68.8 KB Created: 2020-12-22 07:26:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: d738b0925fbf9a014e537a3ccd164cd3 SHA-1: 6be2bb4ee477f90fbd8e595e5d01e6e9a3f2557e SHA-256: 102ae0b04aba60b4d56b6d5ad975945813f2c291e53d0d8e047c4d903933556a
244 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous embedded links, many pointing to disposable hosting and redirector infrastructure, indicating a link farm designed to lure users to malicious sites. The ClamAV detection and ML classifier strongly suggest malicious intent, likely for phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of techniques used to facilitate initial access and potentially download further payloads.

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.
  • 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.
  • 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://traffmen.ru/123?utm_term=last+day+of+school+lee+county+2020 In PDF document text
    • https://xosagosogasimaj.weebly.com/uploads/1/3/1/4/131453054/aeb05be6a4.pdfIn PDF document text
    • https://gopogaxewose.weebly.com/uploads/1/3/4/0/134013169/4876557.pdfIn PDF document text
    • https://gonerogad.weebly.com/uploads/1/3/1/4/131438616/bidevuxala.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369631/normal_5fdd692e7059d.pdfIn PDF document text
    • https://jiresuzava.weebly.com/uploads/1/3/4/7/134706808/2536929.pdfIn PDF document text
    • https://kafasomawupi.weebly.com/uploads/1/3/0/7/130775431/wafoxofalotulo.pdfIn PDF document text
    • https://nupurotuxi.weebly.com/uploads/1/3/4/8/134854616/8841854.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461249/normal_5fb4561ce06da.pdfIn PDF document text
    • https://vewenaloviriwu.weebly.com/uploads/1/3/2/8/132816087/b909c6a228a.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/ba078dcb-4b08-4d04-b394-59bdf3bb48f0/4_wheel_drive_hardware.com.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a775c01c-194b-4613-a9f1-ed0860817f7f/88143980211.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/21284402-1207-42b4-b868-f507a37b4847/52321110502.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/049fc0ef-7602-4fe2-9353-45149e7e3f23/68326763659.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/135c10c4-d158-4ba6-9dd6-86f3dda71234/mixefopazesokefigasi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/65430632-67c5-476a-b5cc-2de6d319d349/29557128785.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_off0000d00f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD00F 5332 bytes
SHA-256: 50095a193e8828b0276e7ea8940843cb312e561f1646777f92e1c3c117474888
font_01_sfnt_off0000e23c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE23C 10776 bytes
SHA-256: 04365166e37762778a20177b12b522b4698852c584f7ca9808d37862d2da34fd

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