Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb2dafc5a73a7a23…

MALICIOUS

PDF

76.8 KB Created: 2021-03-26 04:03:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6c9b386ccc9a817323b5db0732d3b72d SHA-1: b5ebc161a4c77101a79dbf2d5d169eff98ea6762 SHA-256: eb2dafc5a73a7a2315278995a64b6a7a1ee68481ffc2d2ffbd661b1c54a86103
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 'ponafet.ru', which is likely the primary malicious destination. The document body, though heavily obfuscated, contains text related to 'lost purchased songs on itunes', suggesting a lure to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://ponafet.ru/aws?utm_term=lost+purchased+songs+on+itunes
    • https://cdn-cms.f-static.net/uploads/4427085/normal_600aabc887952.pdf
    • https://cdn-cms.f-static.net/uploads/4474979/normal_5fd11cc61fc4c.pdf
    • https://cdn-cms.f-static.net/uploads/4452389/normal_6033217f126c1.pdf
    • https://static.s123-cdn-static.com/uploads/4428052/normal_5fdff27e2b411.pdf
    • https://cdn.sqhk.co/vaziworab/jggdHho/79108090723.pdf
    • https://cdn.sqhk.co/rujojumex/Y1exlha/dragon_age_keep_guide.pdf
    • https://cdn.sqhk.co/baxorurifina/Ngcjc9g/16465289472.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://a52dd608-e7dd-4d50-8005-e0fd7a3896b4.filesusr.com/ugd/43d2fc_ebf2297f884c4409b429ce3a32a0b24f.pdf?index=true
    • https://348ddb29-83e1-4812-94a1-743b72ef9b42.filesusr.com/ugd/23b571_17242f3fdb8347a4823ebaedca315318.pdf?index=true
    • http://fubageraj.rf.gd/novakaketade.pdf
    • https://7b4e975e-109f-4397-a679-93e438ff1453.filesusr.com/ugd/c33f71_d23c380394924a3fa72ca24b9788623b.pdf?index=true
    • https://uploads.strikinglycdn.com/files/0a1261c5-a1a1-4bca-9d87-38e82fb50c7e/how_many_miles_will_a_honda_shadow_last.pdf
    • https://8c17aa34-c454-4d6c-a218-8929c845e329.filesusr.com/ugd/808cd0_6171d3cfee714588ae36ca4e285ffbe5.pdf?index=true
    • https://8b5ac0f3-2bc4-49a6-9a99-2541af31b215.filesusr.com/ugd/f2ef67_001471c8bc244aa797eb46bf6c13ed02.pdf?index=true
    • https://53ebb62d-ddaf-432f-8dc3-1f4746653467.filesusr.com/ugd/bbd3cf_6dc0e7e56594403b92dcb25e895a77a7.pdf?index=true
    • https://ac3db616-04cb-40f1-8357-c67041f5e20c.filesusr.com/ugd/eda9ba_77f7496e832e4b75ae8fd951f9bd2802.pdf?index=true
    • http://desiwafinu.epizy.com/life_is_beautiful_movie_songs_naa.pdf
    • https://uploads.strikinglycdn.com/files/cb2eb29c-168a-41df-8b15-4f0f4ec5dcbb/is_dominos_garlic_and_herb_dip_ranch.pdf
    • https://uploads.strikinglycdn.com/files/de985441-6994-4e7a-95a3-36d4124d0066/87939450148.pdf
    • https://uploads.strikinglycdn.com/files/c020abca-4089-4bd0-ae2b-0a96d96466b8/knot_for_single_rope_swing.pdf
    • http://medojowibapij.epizy.com/don_t_starve_hamlet_beginners_guide.pdf
    • http://zasidad.epizy.com/74785949942.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_off0000ec17.bin
996674cc4a3815d27cef14919b69280b0545ae7272fd449516889083dc601af0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC17 5244 bytes
font_01_sfnt_off0000fdf1.bin
07daebd25e4413769befdd68486103019ea3c9d4c75c53beacb99738b84dfae6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFDF1 11876 bytes

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