Malicious PDF — malware analysis report

Static analysis result for SHA-256 de78ef9222133ec9…

MALICIOUS

PDF

66.3 KB Created: 2021-03-04 00:29:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bf4b1743c769374c4c8523f77e8ec152 SHA-1: d0df6a20468a4d1fa542936a771d98dd87b35485 SHA-256: de78ef9222133ec9ad6765e4384c053cfb2b6f899516820a8e8693b82534c516
96 Risk Score

Malware Insights

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

The file is identified as malicious by multiple heuristics and a machine learning classifier, with ClamAV detecting it as Pdf.Phishing.Trojan. The embedded URI points to a suspicious domain, suggesting a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and the presence of external URIs indicate a potential for malicious content delivery.

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://golowaki.ru/123?utm_term=a+first+course+in+database+systems+3rd+solution+pdf
    • https://cdn-cms.f-static.net/uploads/4491669/normal_6033d9e1998e8.pdf
    • https://cdn-cms.f-static.net/uploads/4385413/normal_6010ccc673aec.pdf
    • https://cdn-cms.f-static.net/uploads/4366978/normal_6040082387cfd.pdf
    • http://runolive.com/finnegans_wake_bar_lanzarote5ded6.pdf
    • http://prizinsta365.online/xakixutofowegokow7sbx5.pdf
    • https://betedodokadez.weebly.com/uploads/1/3/4/8/134882186/3098302.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://vemusimovoxodan.rf.gd/my_android_phone_restart_again_and_again.pdf
    • https://s3.amazonaws.com/welanisowari/goguxo.pdf
    • http://riporem.epizy.com/rawalpindi_chamber_of_commerce_membership_form.pdf
    • http://nosikugabuvisal.epizy.com/namejulokutirifuzedurez.pdf
    • https://s3.amazonaws.com/dozore/bet365_for_pc.pdf
    • https://s3.amazonaws.com/lanubili/jenolafumej.pdf
    • http://dakafatuvuguviz.atwebpages.com/12570475950.pdf
    • https://s3.amazonaws.com/zodawanuror/atif_aslam_new_song_dekhte_dekhte.pdf
    • http://nufiwimuzobo.onlinewebshop.net/how_do_i_connect_my_swann_camera_to_my_tv.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_off0000c4d6.bin
400489306c6df908214a0b8e2dafbcd6f0368991825b265d80b727480bce1444		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC4D6 5696 bytes
font_01_sfnt_off0000d82a.bin
51d949f83acb91c61177f879d4c9f743018c592383e976868ed103d32647ef1f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD82A 10540 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.