Malicious PDF — malware analysis report

Static analysis result for SHA-256 54038e6588fcf362…

MALICIOUS

PDF

61.4 KB Created: 2020-12-08 03:41:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 22ba44cdca9054c97367b88c86a458c3 SHA-1: c319bfdbc6e19a898dd011c95484dff00d093cae SHA-256: 54038e6588fcf362f5c6f24969e4139ecf9097108f20577811a4d1b882888ce7
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://gettraff.ru/123?utm_term=bloomfield+nm+schools+spring+break'. The ML classifier also flagged this PDF with high confidence. While no scripts were explicitly extracted, the nature of the redirector suggests an attempt to lure the user to a malicious site, likely for phishing or to download a secondary payload.

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
  • 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://gettraff.ru/123?utm_term=bloomfield+nm+schools+spring+break In PDF document text
    • https://static.s123-cdn-static.com/uploads/4403266/normal_5fca3e1d2183c.pdfIn PDF document text
    • https://tinavabubopani.weebly.com/uploads/1/3/4/3/134317914/c91fd22cd42.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491445/normal_5fca9ae558a2e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417314/normal_5fa52c7825f5f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385014/normal_5f938286b7617.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405184/normal_5fbcce116a457.pdfIn PDF document text
    • https://pirulilepeno.weebly.com/uploads/1/3/4/0/134040853/41832ab1188d073.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc5b590c30a162e0c73766b/t/5fca5abd7612084f2dbd2941/1607097021751/wewilomek.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0c1ca2bbd74065805c248/t/5fc13c38f8cdb769c610809e/1606499385130/billy_miller_general_hospital.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1015360f2895dc1e86a3c/t/5fc2ef05eaf37e3b64fd90a5/1606610693222/rarinadiret.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_off0000b190.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB190 5820 bytes
SHA-256: 0f8f1d29f59ae9eef23c915c41198ec09ded03c696a751957ca2b115c5a2499a
font_01_sfnt_off0000c53b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC53B 10028 bytes
SHA-256: 0867b6e12812688caa21155e0f7067b97dc29552e039ec02438aaab552a7cfbd