Malicious PDF — malware analysis report

Static analysis result for SHA-256 41c60fdabb625070…

MALICIOUS

PDF

96.1 KB Created: 2021-01-16 03:30:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 2914c9ad8e38cdce71bbd40d892416b3 SHA-1: 5298252677ce05045f3f53e847bbba82fd0e648e SHA-256: 41c60fdabb6250703ce257ee62c7f070ab0b580877f252a86b5fe644ea53774b
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing attempt. It contains an external URI pointing to 'https://traffine.ru/aws?utm_term=ariesms+training+guide+2018', likely a lure to a malicious site. The document body is heavily obfuscated, preventing a detailed analysis of its specific content, but the presence of external URLs and the overall detection strongly suggest a phishing or credential harvesting scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/aws?utm_term=ariesms+training+guide+2018 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4450151/normal_5fed529cb81ef.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386618/normal_5fe420f85ddb0.pdfIn PDF document text
    • https://site-1172046.mozfiles.com/files/1172046/bolutalonanemuxuvomirof.pdfIn PDF document text
    • https://site-1208698.mozfiles.com/files/1208698/41698603229.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419628/normal_5fd1a988dcb7c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470972/normal_5ff6a2493d35b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4394072/normal_5f9d0eb161a1a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409256/normal_5fbecf831b84e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372377/normal_5f8c60fa341e6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384299/normal_5fb7ff93f1f2d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375541/normal_5ff5ced64d27e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367938/normal_5f98cbf78bb83.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421038/normal_5fc30407bef20.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368221/normal_5f96666f74150.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010864.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10864 6608 bytes
SHA-256: 6bbb31392f1925d6afffc88b4c0efb49f15b48d5f889dabaa0f043fd9c1acc35
font_01_sfnt_off00011f04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F04 5624 bytes
SHA-256: 154ec91367d66bfd45d18eb03be71fd39c7f70d0dab4d16ec87e8de66117c8d7
font_02_sfnt_off0001320d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1320D 13228 bytes
SHA-256: 2fb18efeec5e011c680c1645b9331810debcfef93e9aa6abb16adc9de234c4ba
font_03_sfnt_off00015d71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15D71 16204 bytes
SHA-256: 532315dfdc59b350d447ad91845dd8cc72a836e684f536ab9a4305dc5b53fb8e

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