Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e6f27db29cd433c…

MALICIOUS

PDF

66.8 KB Created: 2020-11-24 20:17:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: c068131e25fa05b02954c76103228d6f SHA-1: 9296a53531d32ac00e13c83c4b8603d6c9846ab9 SHA-256: 7e6f27db29cd433c07aabec9d0207ddc71643dc015d67a98d63c0dc1f997a9df
214 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 and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • 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=mole+practice+problems+and+answers In PDF document text
    • https://xikosenazegan.weebly.com/uploads/1/3/0/7/130739601/figozu.pdfIn PDF document text
    • https://judunelikirolo.weebly.com/uploads/1/3/4/3/134375477/voziguvulu.pdfIn PDF document text
    • https://tusejefil.weebly.com/uploads/1/3/4/3/134320171/87601f44b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457011/normal_5fa56758bdf03.pdfIn PDF document text
    • https://rifitozimolumi.weebly.com/uploads/1/3/4/6/134667823/36b63b774051b9.pdfIn PDF document text
    • https://tojetipa.weebly.com/uploads/1/3/4/2/134234581/a2a083365fda.pdfIn PDF document text
    • https://kufojomarolov.weebly.com/uploads/1/3/4/4/134401526/4407765.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373281/normal_5fb42ef3d81ea.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/baposivarabuj/capelania_hospitalar_e_tica_do_cuidado.pdfIn PDF document text
    • https://s3.amazonaws.com/tujeviwakirawu/93870744386.pdfIn PDF document text
    • https://s3.amazonaws.com/napejaxosinages/california_us_history_textbook_8th_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/pevuwarobuvowa/mabamexomewoga.pdfIn PDF document text
    • https://s3.amazonaws.com/jolituzoji/negative_velocity_graph.pdfIn PDF document text
    • https://s3.amazonaws.com/sazariwapa/40342077613.pdfIn PDF document text
    • https://s3.amazonaws.com/sinamozagemoger/nexudutuju.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b8b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB8B6 5244 bytes
SHA-256: 991868e8726e9407ad5a2649232f9384f2fbec16f1187ce581b516b62a35899d
font_01_sfnt_off0000ca70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA70 10868 bytes
SHA-256: 5876c813e53bcbd9de5af16801fbb06d2784a5ccdf4498392652f764d371d386
font_02_sfnt_off0000efa0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFA0 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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