Malicious PDF — malware analysis report

Static analysis result for SHA-256 03f3721ea373afdb…

MALICIOUS

PDF

71.3 KB Created: 2020-12-16 19:44:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 486dadf26df67c3697e6e0856a900943 SHA-1: d75344bc4a9d016689fe88901172d687b43348fc SHA-256: 03f3721ea373afdb90b5493d1f70fa425e72b41048b4ecb68d1e4114ca4e0867
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffmen.ru/strik?utm_term=essays+of+eb+white+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4370985/normal_5f9ea0b777f64.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375206/normal_5fa0c532971ee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417029/normal_5fbbda0d99905.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378846/normal_5f8c3f7621278.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375515/normal_5f9c056e286dd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383805/normal_5fda02904edf5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368954/normal_5fc4f201ea3fd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479460/normal_5fb95c0342cb7.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://uploads.strikinglycdn.com/files/2928d440-0aee-4c01-b4dd-77e8cc7645d1/89780095945.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1d9757848ba205d1f35f1/t/5fcaf1a1a51c5a1401a02c08/1607135650359/tinifa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d04e454-7e1f-4e39-ba92-c4047a91a8e9/roofing_ice_and_water_shield_lowes.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1976bb8467722f1d927cd/t/5fc29a23eaf37e3b64f1815b/1606588963146/tefigabokojozevadunaro.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc33b8b3dfdd95b60e431f6/t/5fc3ce454f98375720544346/1606667845781/80897318801.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc52c9311f6a41984a1865c/t/5fcf52a83fa051062b451951/1607422644729/maserati_ghibli_interior_colors.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_off0000ce88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE88 4976 bytes
SHA-256: 46d9c6d08d126dbb20adef88d6a564d9c8c1e91745a19de0b4f71676f3558e1d
font_01_sfnt_off0000df99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF99 10240 bytes
SHA-256: 596808c3dd16198217fa76c91ee061820945ce5cf5988e35fc70b4928474f8a9
font_02_sfnt_off00010272.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10272 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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