Malicious PDF — malware analysis report

Static analysis result for SHA-256 5dc314d5907e9d45…

MALICIOUS

PDF

67.0 KB Created: 2020-11-28 08:53:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: ab651c3a8e6d1961755b0d0deb92b6d2 SHA-1: db35edd64aef3546ae46a5015fd0983fefb31172 SHA-256: 5dc314d5907e9d45602c1116d9353ac82ef71699b824aed1a10dfc7424a2f728
116 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. It uses a QR-code lure. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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://trafffi.ru/123?utm_term=swann+security+camera+1080p+manual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4374542/normal_5f91fcc57670e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481055/normal_5fbbadcd7c1a4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381294/normal_5f970f1763fe3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485448/normal_5faa1628e3a64.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384460/normal_5f9f0284144a9.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/fefurorobumi/early_college_academy_ga.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/239a1e44-e563-4f7e-a481-3d67c6e3a4b9/97379252873.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2f00668-1327-4202-a650-9aa2f8dfb39a/how_does_bacteria_move_around.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0811daee-dff0-40bc-a49c-40a3ae4a946e/pyromancer_pve_guide_ds3.pdfIn PDF document text
    • https://s3.amazonaws.com/welanisowari/xuvekobujusetufoxub.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/59736513140.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_off0000c70a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC70A 5764 bytes
SHA-256: 3385e69eebbbbe4a2a1bdf9f4c223526341b46d1757565f15191cdcefd82fdc5
font_01_sfnt_off0000dab0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAB0 10924 bytes
SHA-256: 1ba148daa748f32dc5e3cac119d668b7862618f3421de41643108ce8ff111b76