Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d6596678d8e6df4…

MALICIOUS

PDF

74.2 KB Created: 2020-12-01 05:58:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 176e2c4afe2d1e09ad997bc484751303 SHA-1: d3a0a3314b55090597c82c50a77540b35dad72ac SHA-256: 4d6596678d8e6df4915190d97bbf3219b86696d4dc2dddc791c51bc78ebc3a0c
162 Risk Score

Malware Insights

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

The PDF contains a SE_INVOICE_LURE heuristic, indicating it's designed as a fake invoice. It also fires a PDF_MALICIOUS_REDIRECTOR_LINK heuristic, pointing to a suspicious URL. The ML classifier strongly flags this PDF as malicious, and ClamAV confirms it as Pdf.Phishing.Trojan. The embedded URL is the primary indicator of malicious intent, likely leading to a phishing page or malware download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://gettraff.ru/strik?utm_term=satellite+city+hall+kapolei In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jemazejodep/temario_ser_bachiller.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0f6c4e5c7695ca99bf722/t/5fc574daf8cdb769c69c8781/1606776026586/national_grid_marketplace_coupon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17540e70-7d22-450f-af33-9fbaf2e4cee1/belafejuvibobote.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26510142-d983-4bae-a9df-402353359738/vajafogajes.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf685f3c6ccf69f356bbc3/1606379615654/pixubaponuto.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4176476-3159-49fb-89ab-f7fb4114e484/41925881922.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b503741-ae83-4d78-b96d-955eaf986145/36833977954.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac19e721-80e6-4df0-ac7e-a03269cd6996/37620921919.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0d6092e537a05ef08bc6e/t/5fc1fc943c02f22b9d537c3b/1606548628541/darth_vader_ps4_vr.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/wigasiwimavi.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbceeef1491241adc443a46/1606217455045/susetudipofatumubuvefagox.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf55e4f81c9a2a0c990ad4/1606374884918/xewubojitowuw.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc293fe0b6b03258f403ad0/t/5fc58fdb145a8629dc703d55/1606782939550/21232572409.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_off0000e46e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE46E 5016 bytes
SHA-256: 2556a76918f5d431e7c06d217bf3b67e25e8475e4c1ef1ce52256bc61301b61c
font_01_sfnt_off0000f588.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF588 11372 bytes
SHA-256: 38c4e1e11baa24ac3c44a94d8d59e1f35b7bb99c33c34723b0f2b0d9b8a4263a

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