Malicious PDF — malware analysis report

Static analysis result for SHA-256 70c5b73304903ea2…

MALICIOUS

PDF

71.0 KB Created: 2021-01-06 10:00:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 87de88cab118d7927f25dfbf17b4ddc0 SHA-1: 844b922d4c0398b8c1a06445a5146eefbef214ea SHA-256: 70c5b73304903ea2f0279dc8957435de6a478424f96eb01e35b62ce27b449404
214 Risk Score

Malware Insights

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

This PDF document contains numerous embedded links, many of which point to external PDF files hosted on various cloud services, forming a link farm. One prominent link redirects to a known malicious domain, suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, appears to be a lure related to technical diagrams, likely to trick users into clicking the malicious links.

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://cctraff.ru/123?utm_term=john+deere+111+lawn+tractor+wiring+diagram In PDF document text
    • https://cdn.sqhk.co/miwizawi/ajj4Jhf/sabenitobegu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368497/normal_5f88954710ef6.pdfIn PDF document text
    • https://cdn.sqhk.co/wepuvumug/hif0Chg/puwudazule.pdfIn PDF document text
    • https://cdn.sqhk.co/lerutefo/eAghjaO/rozegekizidiguxilog.pdfIn PDF document text
    • https://cdn.sqhk.co/pivokazi/otTe7hd/buguzarojafedotosebotu.pdfIn PDF document text
    • https://cdn.sqhk.co/jekefebiba/rifhbTK/44941118493.pdfIn PDF document text
    • https://kagopibuxewiki.weebly.com/uploads/1/3/1/3/131398156/xotijubafo.pdfIn PDF document text
    • https://cdn.sqhk.co/kinifukix/a1QfhjF/pamupusoxavajofuzi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413374/normal_5fe381487425d.pdfIn PDF document text
    • https://gidakilubokaz.weebly.com/uploads/1/3/4/6/134607675/6c2c8e85439c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/voropa/nadominitewulatobaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/16f2fb93-aade-4380-a734-248f419a46ad/veboravorinofan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3643918c-cb35-4a1d-9570-283960080ead/80235603326.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/54c6d964-eeb2-40db-ae6e-a7fd0015e7e3/diario_di_un_ladro_di_ossigeno_Grati.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a21e7c8-1dbf-4c85-9373-6db442720099/modest_mouse_bukowski_chords.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_off0000d7c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7C3 5308 bytes
SHA-256: ac9e8935068a533be50451503013eb228ea7d8ed8c0c9e12b22f083d77728b57
font_01_sfnt_off0000e9bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9BD 10868 bytes
SHA-256: fbd0d191dda3cfdbf8e86aa5b645653ac3dc6e569c28bcc60248a84b2c953246

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