Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7aced75de6e204e…

MALICIOUS

PDF

63.1 KB Created: 2020-11-17 04:40:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 7707fd4cac7fb6de9ac039c09b51a256 SHA-1: df10ab512a6daec7fbd9ffac67362cb62e424c9f SHA-256: c7aced75de6e204eae7041753d715fbaf5b70f2aed6475952fc55850b450a915
154 Risk Score

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 0.9977

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://ggtraff.ru/strik?utm_term=atoto+a6+instruction+manual In PDF document text
    • https://ganulexotugoris.weebly.com/uploads/1/3/1/1/131164012/7031248.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417033/normal_5f952f0241f51.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453741/normal_5fa5b46b09b2b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388062/normal_5f9142ca9f39c.pdfIn PDF document text
    • https://pevinuwipe.weebly.com/uploads/1/3/0/8/130873962/lobisuluwolale.pdfIn PDF document text
    • https://xipurewaxo.weebly.com/uploads/1/3/4/7/134759043/3096465.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/lumixi/vefezebivigad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0bfedd42-fdde-4318-b1a9-a5bf395aaaf6/disgaea_5_4-2_grinding.pdfIn PDF document text
    • https://s3.amazonaws.com/lorifumofelu/5685132481.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a606.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA606 5088 bytes
SHA-256: 0a1728f388b2ead4b2f01f1ade03787e9241148cc40143a1f177f1a3b965a77e
font_01_sfnt_off0000b73b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB73B 10436 bytes
SHA-256: 3502641a24f050f1e1e133bb1de2226f22b74aae96121af4c877d7f707237420
font_02_sfnt_off0000da5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA5C 16204 bytes
SHA-256: c988415812f594187b0a0ed75dc52802e798e1695b49bd300f8412a65040a449