Malicious PDF — malware analysis report

Static analysis result for SHA-256 df3a142d99ff352f…

MALICIOUS

PDF

231.2 KB Created: 2021-02-26 23:58:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 1ce5a226d341eb7db830de1ca2e56442 SHA-1: 4fef56fe6b555f8f4a3298b8ed26561e0368b26e SHA-256: df3a142d99ff352fd7178c594cb4982b34055c644f202532422ef68a18e9893c
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a phishing or trojan payload. It contains an embedded URL pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The document body, though heavily obfuscated, suggests a lure related to a 'Rifts conversion book'. No scripts were extracted, but the presence of external URIs and the overall detection profile strongly suggest a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9986

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://xezojetit.ru/123?utm_term=rifts+conversion+book PDF link annotation
    • https://paduxadoduxim.weebly.com/uploads/1/3/0/7/130775016/1408057.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481841/normal_5ffbd18508522.pdfIn PDF document text
    • http://navalny.design/abc_songs_freezbx88.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459914/normal_602e53715d55b.pdfIn PDF document text
    • https://serarabasujuz.weebly.com/uploads/1/3/1/6/131606617/wonukarubaxexu_gitubemegesox_dadonobo.pdfIn PDF document text
    • https://zafozudakajadev.weebly.com/uploads/1/3/0/8/130814863/tojazetadozusexipe.pdfIn PDF document text
    • http://summ-ita.space/tipos_de_palabras_simples_compuestas_derivadas_y_parasinteticasefhrx.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384142/normal_600ca8fe19185.pdfIn PDF document text
    • http://makamar.xyz/vulewikawudegetomobul2y9m.pdfIn PDF document text
    • https://beredixe.weebly.com/uploads/1/3/4/7/134762790/puloz_zikejazetele_fazikone.pdfIn PDF document text
    • https://xaxazusilu.weebly.com/uploads/1/3/4/7/134757455/459551a.pdfIn PDF document text
    • https://rixowumunek.weebly.com/uploads/1/3/5/3/135330445/banaz.pdfIn PDF document text
    • https://tuzutetenufiro.weebly.com/uploads/1/3/4/7/134716615/tusutuluz_zexebanu_relos.pdfIn PDF document text
    • https://velazidolis.weebly.com/uploads/1/3/0/9/130969689/fiwapawudevenis-defumalukafeni.pdfIn PDF document text
    • https://sozuxope.weebly.com/uploads/1/3/4/8/134873608/2938743.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fidefofudi/club_dead_t_shirt_polo.pdfIn PDF document text
    • https://s3.amazonaws.com/tolivajupeku/pedro_como_agua_para_chocolate_autor_biografia.pdfIn PDF document text
    • https://s3.amazonaws.com/povodijirig/sudega.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00035541.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x35541 4904 bytes
SHA-256: 55c3771675c4d5593aed25e212524d1e0000bc0434e977656a37c42570f0650f
font_01_sfnt_off00036615.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x36615 12392 bytes
SHA-256: 271e9e5cb198f88a183e82a2ee49c1d8f94c19c8579da230bbd28edfb2dbbac5

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