Malicious PDF — malware analysis report

Static analysis result for SHA-256 0212b12a9e8c352f…

MALICIOUS

PDF

82.5 KB Created: 2021-03-25 11:41:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8dcb9e0de2a9becc1c9c4a3f39ac3899 SHA-1: 2b31e3b33aa445867cb79a6a848cc299c6c75acb SHA-256: 0212b12a9e8c352fffd52318cfa032278a04138c53aadd814c2683cf19bb9bec
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a suspicious domain, identified by ClamAV as a phishing trojan. The document body, though heavily obfuscated, appears to reference 'Psalm 23 1-3 nlt', suggesting a lure to disguise malicious intent. The presence of external URIs and the ML classifier's high confidence further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://ponafet.ru/strik?utm_term=psalm+23+1-3+nlt
    • https://cdn.sqhk.co/xijodepub/hijbmjh/62851851414.pdf
    • http://expressday.online/25508045568r3lla.pdf
    • https://cdn.sqhk.co/lajawawinu/ig2gdK4/92281551736.pdf
    • https://cdn.sqhk.co/numisezopo/gfig5gj/42949484098.pdf
    • http://itsamorem.com/what_of_this_goldfish_would_you_wish_goldfish_character_analysiscb1g7.pdf
    • https://cdn.sqhk.co/fovudadeweto/UgfmLjh/guruxokuk.pdf
    • http://wonder-ita.space/787473404791dn4i.pdf
    • http://liwuzagesasa.22web.org/metformin_uses_in_dermatology.pdf
    • http://uspehdnyaaxyz.xyz/what_is_considered_a_rural_health_clinic4tvku.pdf
    • https://cdn.sqhk.co/bofadulal/DiegFie/ejemplos_de_aminoglucosidos.pdf
    • https://cdn.sqhk.co/semoxumid/chbYjdM/hacking_online_guide.pdf
    • https://cdn.sqhk.co/bulunazi/ge3CIjj/lovecraft_country_episode_4_cast_yahima.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://e25b5f36-ee09-4010-8803-019b2853a23b.filesusr.com/ugd/c34eac_f41b85d014b4474e8207cba60243706a.pdf?index=true
    • https://86b7bb9a-6a0b-496c-a062-e8aa60c365d0.filesusr.com/ugd/dcf311_a1d81aad26b84c24b8e2aca15dfc47ae.pdf?index=true
    • https://uploads.strikinglycdn.com/files/fc0a94ac-f4bc-40a8-921d-4f388f456a9d/94238981223.pdf
    • https://uploads.strikinglycdn.com/files/8ced5576-9a56-4bfb-9ebf-7b0d4fbdd869/bare_act_book_online.pdf
    • http://gobavaduxa.epizy.com/adventure_capitalist_mod_apk_6._4._0.pdf
    • https://3d1db4d0-c196-4dd3-8d5c-bb108cafbd43.filesusr.com/ugd/479e38_3e0cfada9e2b4e559a591465e14c6403.pdf?index=true
    • http://pokazirajig.rf.gd/addicted_2017_movie.pdf
    • https://0e9c393c-9feb-4465-ae9d-4486bea7a644.filesusr.com/ugd/4b68be_05aa98869ca8494a9f6b6d0c53d576d5.pdf?index=true
    • https://f733e552-90a1-4d1f-83ca-a6b36afcf31c.filesusr.com/ugd/38bf1f_2107b788259645ac91f594ad95e45025.pdf?index=true
    • 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_off0000f402.bin
9aefa0445f00da78609bf93b3bfa8d958d09ee734f17919ecdf551391e7cf082		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF402 4628 bytes
font_01_sfnt_off00010392.bin
639d2d263c3249d53f43351b9bebe0f4acb81519698df333d2518d51d5e12491		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10392 12960 bytes
font_02_sfnt_off00012ef3.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12EF3 4324 bytes

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