Malicious PDF — malware analysis report

Static analysis result for SHA-256 e18653c55ddada35…

MALICIOUS

PDF

64.8 KB Created: 2020-11-27 03:27:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 04d13fd2997e43c32fffc06b46c373a6 SHA-1: d2a7fb71c3bdeb099f00a581ed539f5be20410eb SHA-256: e18653c55ddada354985a686b3b871b6aaaf2dcf2a58fe9ea839d43df0af491e
154 Risk Score

Malware Insights

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

The PDF contains an embedded link to a known malicious redirector, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The ML classifier and ClamAV also flagged this file as malicious. The primary IOC is the malicious URL, which is likely used to lure victims into a phishing or malware download site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • 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.
  • 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://traffine.ru/123?utm_term=surface+area+of+a+composite+figure+worksheet In PDF document text
    • https://cdn-cms.f-static.net/uploads/4487662/normal_5fb4543f3060a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450003/normal_5fbc10799883f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411250/normal_5fa1aff9d3b67.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/mojivikapeti/watch_joker_online_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/537bd9aa-ebb1-4d7a-b38c-e77a1af33df6/xapukunodaparofuxemus.pdfIn PDF document text
    • https://s3.amazonaws.com/jolunenafobuw/91163436185.pdfIn PDF document text
    • https://s3.amazonaws.com/regufojalojaza/vokofelirirunazaluwo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f49d3803-df2b-45c0-aa82-74dc7e242b08/22968117261.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/025a4c58-b04b-43ee-98e7-cb061114063d/45352387016.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e079bc65-99ea-4ea1-b92a-e12b3aeb02a0/nimofesugaj.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_off0000b274.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB274 5432 bytes
SHA-256: eea481527d6cb2c4ce3b66cf44970f092b0b024ac7cdb20ebffed3db4b925e73
font_01_sfnt_off0000c4ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4FF 10212 bytes
SHA-256: 6be3d12f8b155707860c1b7d5fff5f965de9b34e223711a3ddcff5f9db3548e0
font_02_sfnt_off0000e7f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7F3 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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