Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ce5e89da84eb7e1…

MALICIOUS

PDF

95.6 KB Created: 2020-12-31 16:09:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: a78f1a9567f41179aadd07825112ff5b SHA-1: 5978cf1c015337d5560e0e67b4b36d3fe4ca29f5 SHA-256: 8ce5e89da84eb7e1a7e6905b675b40c576f1cb1c762d3f1bef9b3c12db73ed78
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains an embedded URL that redirects to a suspicious domain, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the presence of external URIs and the overall detection profile point towards a malicious PDF designed to lure users to a compromised 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
  • 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://traffnew.ru/strik?utm_term=dhoom+machale+singer+from+thailand PDF link annotation
    • https://wifonofiwi.weebly.com/uploads/1/3/4/6/134636358/dd876.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406497/normal_5fbc8fee9dca9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451752/normal_5fc55265960dd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445338/normal_5fc5d4c216d2a.pdfIn PDF document text
    • https://tegugozitofo.weebly.com/uploads/1/3/0/8/130874592/937a9724f.pdfIn PDF document text
    • https://ganarusi.weebly.com/uploads/1/3/4/1/134109047/bojuled.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414680/normal_5fd146741d069.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495839/normal_5fc7b2bacdd65.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://s3.amazonaws.com/dinigugaxej/tufet.pdfIn PDF document text
    • https://s3.amazonaws.com/rujimidujek/gekagisope.pdfIn PDF document text
    • https://s3.amazonaws.com/tefelaj/3d_max_trial_version_free.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off000141c2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x141C2 26276 bytes
SHA-256: 47e334cebbbb3980b425de5a41137758df5b05e6802ecca9e149d7186654c82a
font_00_sfnt_off0000f528.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF528 5436 bytes
SHA-256: eac96ee48707f39c43a2906e74769bc6567c9131ff9900d3cbbb924a3c014615
font_01_sfnt_off00010771.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10771 7820 bytes
SHA-256: 012782736b7abc7903e47321c5a8f4674724101aa34232fd854bd09384ca5f46
font_02_sfnt_off00011d1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D1D 10656 bytes
SHA-256: 889bc546106258f338a68a0024ff47230ead5b2e7d5d2e1ffa15dfbf193a1398

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