Malicious PDF — malware analysis report

Static analysis result for SHA-256 e379f4eb103b4597…

MALICIOUS

PDF

68.5 KB Created: 2021-02-14 12:48:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dc6b7a5f4c85a13f6489da91edeabfce SHA-1: 742a5f8e55f570e7ba3a53f59bab6e5b69d251c2 SHA-256: e379f4eb103b45974d7d4fc6662e5bbd28b47f4a7390aed48f0b033b87a86659
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI that redirects to a suspicious domain, likely as part of a phishing or credential harvesting attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to lead the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://druttle.ru/wix?keyword=the+crucible+movie+questions+answers
    • https://kejobogufepemis.weebly.com/uploads/1/3/0/7/130775396/kowejes_jakafed_zuvetekejut.pdf
    • https://cdn.sqhk.co/borefigux/jbicxtk/new_notification_ringtone_download_mp3.pdf
    • http://nuzidixiwetor.22web.org/ziduropajogivunavivav.pdf
    • https://kefexogutifega.weebly.com/uploads/1/3/5/3/135309882/8922112.pdf
    • http://kihepc.xyz/pentagrama_llenguatge_musical44cs6.pdf
    • http://copyright-notice-ig.com/drama_triangle_quiz41wf9.pdf
    • http://znasila.ru/getow0dw9b.pdf
    • https://cdn.sqhk.co/fajoliteve/jiihhhf/chicken_drumsticks_instant_pot_cook_time.pdf
    • https://werotibumef.weebly.com/uploads/1/3/4/9/134900185/1583201.pdf
    • http://tourist.fish/66539532169nj9xi.pdf
    • http://juwolopuga.66ghz.com/nasamojevotimulevep.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://lojokedasu.rf.gd/cg_video_dj_remix.pdf
    • https://s3.amazonaws.com/purawuma/nebazebideluta.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cf89.bin
8803e7100c0f4e3cfcf87e0931ad7192fe7c4f91ea2c74363818c5c4d11a1c0e
pdf-font-stream PDF embedded font (sfnt) at offset 0xCF89 5404 bytes
font_01_sfnt_off0000e1d8.bin
53808ffb3d2f95798f29a57d30dfb7dff15b6538aebf5d45f78cfbb650dfbb5c
pdf-font-stream PDF embedded font (sfnt) at offset 0xE1D8 10228 bytes