Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e47e6b54c455fb0…

MALICIOUS

PDF

72.7 KB Created: 2021-03-03 03:49:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 51ce4efc45dcd51a47587bb9d63df3f9 SHA-1: e30e023ca6a473be4e6dd14bb3e15b0f09f0f591 SHA-256: 6e47e6b54c455fb03e4885520a322c2e5e60e06dee494331a0ca47be06c1ca63
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL 'https://yafferge.ru/aws?utm_term=new+england+beef+stew' is the primary IOC. While no scripts were explicitly extracted, the ML classifier and ClamAV detection strongly suggest malicious intent, likely involving phishing or malware delivery via the redirector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://yafferge.ru/aws?utm_term=new+england+beef+stew In PDF document text
    • https://static.s123-cdn-static.com/uploads/4366395/normal_5fde56e77ef16.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426425/normal_602e54c338172.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448746/normal_6031c08b66733.pdfIn PDF document text
    • http://uabiomanix.xyz/alive_warlock_guide_wowheadkqy6p.pdfIn PDF document text
    • http://bahis-sikayet.com/las_lenguas_romancessqrf5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479210/normal_6021bf2984343.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445104/normal_5fdc114e3f7fc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366034/normal_601faab442c13.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377656/normal_5fc6dec02f676.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/jafujasiwetid/blood_bowl_miniatures_scale.pdfIn PDF document text
    • https://s3.amazonaws.com/mubemutolewe/why_does_my_bluetooth_mouse_keeps_disconnecting_windows_7.pdfIn PDF document text
    • https://s3.amazonaws.com/neviwove/gegesozimaw.pdfIn PDF document text
    • https://s3.amazonaws.com/kudefem/sujibiwemowetugu.pdfIn PDF document text
    • https://s3.amazonaws.com/piwupevivotixi/76035959799.pdfIn PDF document text
    • https://s3.amazonaws.com/luxelula/83014933000.pdfIn PDF document text
    • https://s3.amazonaws.com/gawabog/lajefubixibewivibupo.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_off0000e056.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE056 5180 bytes
SHA-256: 891ec72ee12ad0bf018036a521e63479b77ad23758697cf2b9dfe6b93081eeb3
font_01_sfnt_off0000f227.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF227 10552 bytes
SHA-256: 9d30d2c0f984aba83de6be5370e3526d6019d3117f5bf8b19d0b9d138d4220ed

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