Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d7078af70496987…

MALICIOUS

PDF

87.8 KB Created: 2021-04-28 03:37:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: afe8935e61a41c75f9d6795b8f7b4ae4 SHA-1: 7cac238042f27f137254709ffeecabc1d0dff586 SHA-256: 5d7078af70496987985b057b5264fa8dbdacca7ca57f88bda4143d9091902cfb
96 Risk Score

Malware Insights

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

The PDF document contains a lure related to recovering deleted Snapchat accounts, directing users to a malicious URL. The presence of embedded URLs and the ML classifier's high confidence score indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to lead the user to a phishing or malware distribution site.

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://seumenha.ru/strik?utm_term=can+police+recover+deleted+snapchat+account
    • http://nusururak.22web.org/52220571220.pdf
    • http://7lessons.website/gorekukelis49xiv.pdf
    • https://lurusinobafor.weebly.com/uploads/1/3/2/7/132710654/2816901aad82.pdf
    • https://geligike.weebly.com/uploads/1/3/4/5/134590657/tezurolijazominanozu.pdf
    • http://cabinetshub.xyz/second_language_teaching_methodsf9nha.pdf
    • https://taxesewisozigif.weebly.com/uploads/1/3/5/3/135394589/bumitimisedefino.pdf
    • http://fruit-ital.space/polygon_worksheets_freerdh4h.pdf
    • https://doxifivot.weebly.com/uploads/1/3/4/2/134235468/d1a2c41e7772ef1.pdf
    • http://mexodinawikil.iblogger.org/aikido_technique_tome_1.pdf
    • http://detonic-official.website/84847524822mwka7.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://52468903-0e2d-47c5-babb-61e1d305d291.filesusr.com/ugd/32777b_868d1d3a503443758bc97e34d2c69aa3.pdf?index=true
    • http://joxopup.epizy.com/purchase_voucher_entry_in_tally.pdf
    • https://uploads.strikinglycdn.com/files/6072d197-8b8b-4f1e-b2a4-ba7d660e86af/12672220373.pdf
    • https://uploads.strikinglycdn.com/files/d58a874d-2a8f-4872-a102-274cdb0a62d2/taoist_quotes_chuang_tzu.pdf
    • https://uploads.strikinglycdn.com/files/3d99e745-098c-4296-8519-83b64d6925b2/duxikonurejalidufanap.pdf
    • http://fudewisukot.rf.gd/ascii_character_code_table.pdf
    • http://bawujirilo.epizy.com/53956246950.pdf
    • https://79e8b926-cc52-4cef-90ae-68e3990d752e.filesusr.com/ugd/694d5d_64fa580bb9a44848bb52d8e6839bd70a.pdf?index=true
    • https://6d5fec37-5936-4ae8-8938-03a86e982f09.filesusr.com/ugd/d4da64_1b7080b750bc4a1b9dafedba104a620f.pdf?index=true
    • http://kotowadanoli.epizy.com/fojofipunopizepuzigodija.pdf
    • https://uploads.strikinglycdn.com/files/9502f51f-2553-4871-9155-63d65ea3440a/do_i_have_short_term_disability_insurance.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_off00010a8a.bin
08f7750392c22dc17cea8dab121ce54022961cd68612cbc21667c0905a9f7cc4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10A8A 5128 bytes
font_01_sfnt_off00011bf6.bin
afd7d655e099e24c968825d5f0e9803594705ed0205511f4edb44bcaffb5a5fd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11BF6 10988 bytes
font_02_sfnt_off0001418f.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1418F 4324 bytes

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