Malicious PDF — malware analysis report

Static analysis result for SHA-256 d67ab8c8c8f5557d…

MALICIOUS

PDF

85.3 KB Created: 2021-03-30 02:27:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f14ae54477c93d01d322ca79e2d6774d SHA-1: b981172a3a340fb3c8639f26a1854be8b27121b4 SHA-256: d67ab8c8c8f5557d3b6aaca5157dfa10c850b146b9e5e6ea0b324935dcfd27f9
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to host a phishing page or download further malware. The document body, though heavily obfuscated, suggests a lure related to game spells, aligning with common phishing tactics.

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
  • 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://kuzutuzo.ru/strik?utm_term=5e+wizard+spell+tier+list
    • https://cdn-cms.f-static.net/uploads/4488569/normal_60348aa99b062.pdf
    • http://faxixovojaja.sportsontheweb.net/axiomatic_method_and_category_theory.pdf
    • https://cdn-cms.f-static.net/uploads/4451363/normal_605d883af12c0.pdf
    • https://cdn-cms.f-static.net/uploads/4423714/normal_6017b61af1298.pdf
    • https://static.s123-cdn-static.com/uploads/4425255/normal_5ffc4f6fd3f68.pdf
    • http://zuregazezoral.mygamesonline.org/easy_smoothie_recipes_with_yogurt_and_fresh_fruit.pdf
    • https://cdn.sqhk.co/jitegoji/flKidnt/56852090087.pdf
    • https://cdn-cms.f-static.net/uploads/4481552/normal_6025c74e2a3fb.pdf
    • https://cdn.sqhk.co/rapowipijes/RLXsPgg/38489579804.pdf
    • https://cdn-cms.f-static.net/uploads/4369783/normal_5fd22fb2f24e8.pdf
    • https://cdn-cms.f-static.net/uploads/4418197/normal_605b6a7e444e9.pdf
    • https://cdn-cms.f-static.net/uploads/4489609/normal_6032695acf4ea.pdf
    • https://cdn-cms.f-static.net/uploads/4455185/normal_60497c4ccb167.pdf
    • https://static.s123-cdn-static.com/uploads/4412380/normal_5fde61f4c5d8f.pdf
    • https://cdn-cms.f-static.net/uploads/4369935/normal_6054cc7934d26.pdf
    • https://cdn.sqhk.co/muzubasiwu/ZciEplV/jabobu.pdf
    • https://cdn-cms.f-static.net/uploads/4366358/normal_605c290bc25b7.pdf
    • https://cdn-cms.f-static.net/uploads/4405443/normal_6059c835be58b.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/dc795ba7-d7ce-4392-9340-dccb2798371e/91027623627.pdf
    • https://uploads.strikinglycdn.com/files/0161484c-11ed-4015-a8a6-f58c473821c8/which_state_is_the_largest_economy_in_india.pdf
    • https://uploads.strikinglycdn.com/files/2f31b235-6077-4d15-8eca-1caa8cb1a969/how_to_install_hood_microwave.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_off00011131.bin
a3d80fc453936b9fbf01e596bcb1e309821c7f484277837ad6c4ceff4853a999
pdf-font-stream PDF embedded font (sfnt) at offset 0x11131 5124 bytes
font_01_sfnt_off000122c7.bin
2707e26662e983abc1408b92f379a4613a9ba3c2a24828fc74281fae661b7d31
pdf-font-stream PDF embedded font (sfnt) at offset 0x122C7 10964 bytes