Malicious PDF — malware analysis report

Static analysis result for SHA-256 c51de47e1ef411c4…

MALICIOUS

PDF

157.1 KB Created: 2020-11-12 21:09:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 4295ceeec64fc290126655e474883ceb SHA-1: bd79b49ffe9a591381fc84b0f64b6b0506d7c39c SHA-256: c51de47e1ef411c4984486abd0c483a366dcf7429eb6e84c1ce44e6e43527c7e
96 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 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 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafffe.ru/123?utm_term=diesel+rotary+engine PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4371261/normal_5f8949e2527eb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372987/normal_5f893847c6578.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366357/normal_5f91294e3c5a8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417205/normal_5f9aaa2d31fe0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422368/normal_5f9863619660b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476126/normal_5fa55bac613ee.pdfIn PDF document text
    • https://ladofozaser.weebly.com/uploads/1/3/4/3/134334290/8245449.pdfIn PDF document text
    • https://nogomikosisodop.weebly.com/uploads/1/3/2/6/132681488/zawojubufa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d24f745-6483-4e85-ad0f-62d69cd4cab8/41518283093.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1cc4bda4-4b8a-414a-af5d-ee58247394d4/tadovebitikopez.pdfIn PDF document text
    • https://s3.amazonaws.com/zunewidimem/sean_hannity_flowers_discount.pdfIn PDF document text
    • https://s3.amazonaws.com/lejivugeleguwod/96756798789.pdfIn PDF document text
    • https://s3.amazonaws.com/zetituri/unblocked_movies_free_shazam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/70c53e0d-2504-4f16-9de4-62de860de193/playskool_heroes_transformers_rescue_bots.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_off00022e0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x22E0A 4956 bytes
SHA-256: 4bf10dc3483d9f2e27ba0643938adde43874dfc9fcbfb8499916220ef6cd8691
font_01_sfnt_off00023f04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x23F04 12204 bytes
SHA-256: 14adb6154b737e1e47ce9a3581dd1ef35b5b097fc2dd7092975ad4bbeb760415