Malicious PDF — malware analysis report

Static analysis result for SHA-256 5becdd84b4893196…

MALICIOUS

PDF

72.8 KB Created: 2021-01-30 06:33:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 0dab13f3fb413f2eaef24b15b6482b2f SHA-1: 5419183fcb57095eee40a8afabd34f301d0fd277 SHA-256: 5becdd84b48931966273f5531d590a1213c5a9da54855c76ce20190438aa77d9
252 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://crophysi.ru/aws?utm_term=game+commandos+3+full+crack In PDF document text
    • https://xevefoworux.weebly.com/uploads/1/3/1/3/131380592/vevolis-zadinogewev.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451742/normal_5fe3c41f82080.pdfIn PDF document text
    • https://jizufuvarax.weebly.com/uploads/1/3/1/1/131164460/xiresumizive-bofox.pdfIn PDF document text
    • https://migobajiker.weebly.com/uploads/1/3/5/3/135390735/6232490.pdfIn PDF document text
    • https://vumetubav.weebly.com/uploads/1/3/0/7/130776444/1706942.pdfIn PDF document text
    • https://finubakexa.weebly.com/uploads/1/3/1/3/131383318/tibomu_zitutukuke.pdfIn PDF document text
    • https://jowopuvuramikir.weebly.com/uploads/1/3/5/3/135313070/sabupivalu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410006/normal_5ff346da86c05.pdfIn PDF document text
    • https://cdn.sqhk.co/zenekukera/ahc2yFk/commuter_benefits_uber_covid.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dulubuli.rf.gd/30946702338.pdfIn PDF document text
    • http://balubusepebibi.rf.gd/chrome_extension_popup_template.pdfIn PDF document text
    • https://s3.amazonaws.com/tibanepoxilibud/1978_cessna_182q_parts_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/nakevoja/66856368412.pdfIn PDF document text
    • http://kojosire.epizy.com/26772869043.pdfIn PDF document text
    • https://s3.amazonaws.com/zedilegol/base64_string_to_angular_2.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_off0000dc1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC1F 5428 bytes
SHA-256: 49720dc3a306d719495a4c3d7169e329bba02ce134a17585cf0d71c98915dd5b
font_01_sfnt_off0000ee7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE7F 11952 bytes
SHA-256: 7b60290ba86c6463e77f9e8db9028b70d9a25dc4a28941faaf027f1891cb5747