Malicious PDF — malware analysis report

Static analysis result for SHA-256 27d8091f0505d722…

MALICIOUS

PDF

79.3 KB Created: 2021-06-01 08:23:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4038d5effbc7d86f221a46410050ff7e SHA-1: 6ebadf1cc518d995ba8eef9a4d9f7a6e7d3c15cd SHA-256: 27d8091f0505d722a3c5cfee4d61945b4758f053d37b5f59c44645a88e3203e3
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that leads to a phishing site, as indicated by the ML classifier and ClamAV detection. The document body, though heavily obfuscated, suggests a lure related to pairing a remote control, which is a common tactic for phishing campaigns. No scripts were extracted, but the presence of an external URI points to a likely attempt to redirect the user to a malicious resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://drafthe.ru/pbw?utm_term=how+to+pair+terrova+i+pilot+remote
    • https://static.s123-cdn-static.com/uploads/4468289/normal_5ffdca6fa82ad.pdf
    • https://static.s123-cdn-static.com/uploads/4403262/normal_5fcac76b2fb16.pdf
    • https://cdn-cms.f-static.net/uploads/4462974/normal_603eae53131d1.pdf
    • https://cdn-cms.f-static.net/uploads/4483083/normal_6019b560beafe.pdf
    • https://static.s123-cdn-static-d.com/uploads/4461744/normal_60b56155dc211.pdf
    • https://cdn-cms.f-static.net/uploads/4426541/normal_602d3aac50216.pdf
    • https://static.s123-cdn-static.com/uploads/4454561/normal_5fe20571dcbe4.pdf
    • https://cdn-cms.f-static.net/uploads/4457302/normal_60295d81bded5.pdf
    • https://cdn-cms.f-static.net/uploads/4373304/normal_5fd9aea1a34f7.pdf
    • https://cdn-cms.f-static.net/uploads/4501810/normal_5fd0f9b905bac.pdf
    • https://cdn-cms.f-static.net/uploads/4449614/normal_606e3388d7d9d.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://bojirakaj.pbworks.com/f/comment_faire_pousser_les_cheveux_crpus_plus_vite_astuce_maison.pdf
    • http://xojifot.pbworks.com/f/dopotikixexot.pdf
    • http://zewalar.pbworks.com/w/file/fetch/144445428/how_to_get_free_robux_without_verification_or_survey_2021_real.pdf
    • https://uploads.strikinglycdn.com/files/861fada4-bb31-4d87-96e9-c5cce2169442/16382213150.pdf
    • http://wojipag.pbworks.com/f/starbucks_barista_espresso_machine_instructions.pdf
    • http://vowujepojez.pbworks.com/f/97103317271.pdf
    • http://pusavivo.pbworks.com/w/file/fetch/144442926/shahih_fiqih_sunnah_bahasa_indonesia.pdf
    • http://xifilipisi.pbworks.com/f/erie_metal_roofs_pilot_program_reviews.pdf
    • https://uploads.strikinglycdn.com/files/2b6f0828-bb72-46d7-a987-176da224d24a/jipuguvuxo.pdf
    • http://paderukut.pbworks.com/w/file/fetch/144438234/bluestacks_download_for_pc_apkpure.pdf
    • http://pupowivala.pbworks.com/w/file/fetch/144425874/defawafapovukakuzolunulup.pdf
    • http://zekodunu.pbworks.com/w/file/fetch/144447552/zojapunevusavemunu.pdf
    • https://uploads.strikinglycdn.com/files/f5169e0a-422d-45b3-9b1f-023c3addcae6/zepiwasekalesofaf.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb32.bin
a6dee7b5e90f4bd9b3757b24ca48a03b3da7525cad78af961b43615031cb5d5a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEB32 4584 bytes
font_01_sfnt_off0000fad0.bin
c1eb4536f94ab61f31e0a23ab29a2cdac54921a5240dbe9b7badf5efe20a3a67		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFAD0 10912 bytes
font_02_sfnt_off00011ff1.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11FF1 4324 bytes

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