Malicious PDF — malware analysis report

Static analysis result for SHA-256 89e84c30b20ab45a…

MALICIOUS

PDF

65.0 KB Created: 2020-11-12 22:50:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: afe62f8334e0e7b618be97d071d0b9ee SHA-1: ba337966d7aaaa87d4ec2972b3e162427676bb04 SHA-256: 89e84c30b20ab45a39289b36fe966a33665d97c4edd6a6a091870a653d387e00
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 0.9997

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=the+very+hungry+caterpillar+pattern+sheet In PDF document text
    • https://cdn-cms.f-static.net/uploads/4388835/normal_5fa438c9a37c1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371812/normal_5f8ab89f8239e.pdfIn PDF document text
    • https://sanuvexugivi.weebly.com/uploads/1/3/1/6/131606490/066a185.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366003/normal_5f9cca91d2659.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367287/normal_5f92db5326b7e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470979/normal_5fa8b560b5fcf.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/8be60066-3b1e-4d21-9905-31d9eed40876/watoxusomuzu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/01d5f352-3e74-4fce-83f4-e6da8783b95a/nugale.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/il_canzoniere_di_petrarca.pdfIn PDF document text
    • https://s3.amazonaws.com/vonusirukete/akmn_beden_dili.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d06d5ee5-93e0-47d9-8206-2fe76cd63378/25188523260.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_off0000b5f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB5F9 5080 bytes
SHA-256: ce552942934d146f398538dd8ead7ffbc5e4375e0e75f61b4c07d323e7485a20
font_01_sfnt_off0000c747.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC747 9472 bytes
SHA-256: e6592fa03840497de64b694af59154adcd859bde41b060c233117c3b180a69d2
font_02_sfnt_off0000e798.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE798 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361