Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d7a625eb8e3616b…

MALICIOUS

PDF

76.1 KB Created: 2021-04-02 20:59:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c4b222b6327425adea4910ba2bc46220 SHA-1: e77df780651cf9882100bd81e1b2c66f7dfbd43b SHA-256: 2d7a625eb8e3616bdeb8517115b488fc0da8d4dd00c14a3b110e8e661704c9f9
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, a common tactic for SEO spam or phishing campaigns. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded URLs suggest the document is designed to redirect users to potentially harmful websites, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://soxebez.ru/wix?keyword=paypal+on+bank+statement+mortgage
    • https://jeketivogusu.weebly.com/uploads/1/3/1/3/131398097/0a052fe.pdf
    • http://fiwisud.getenjoyment.net/daru_badnaam_mp3_music_ringtone_download.pdf
    • http://fafuzum.sportsontheweb.net/afcat_exam_paper_2020.pdf
    • https://poxomovuru.weebly.com/uploads/1/3/1/3/131381772/17c2d6.pdf
    • https://sinosopad.weebly.com/uploads/1/3/4/8/134892142/boxeza.pdf
    • http://palaxofivuleduj.medianewsonline.com/59587878302.pdf
    • https://kiwiwutirove.weebly.com/uploads/1/3/4/7/134707888/dd750f4.pdf
    • https://gojenejanoz.weebly.com/uploads/1/3/0/7/130739654/4147789.pdf
    • https://piwaxiru.weebly.com/uploads/1/3/4/8/134882920/1913309.pdf
    • https://guxevelanitab.weebly.com/uploads/1/3/4/7/134769418/f6c4008.pdf
    • http://fetedeju.mygamesonline.org/logitech_bluetooth_keyboard_number_pad_not_working.pdf
    • https://gosevitugelaw.weebly.com/uploads/1/3/4/4/134439416/8499950.pdf
    • https://litodamun.weebly.com/uploads/1/3/4/7/134710511/muxezazigojaxul.pdf
    • https://tabajojimito.weebly.com/uploads/1/3/4/3/134317549/35bf5d05bde.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/mubefula/juvuximikegekafo.pdf
    • https://s3.amazonaws.com/sitozi/crochet_stitches_book.pdf
    • https://s3.amazonaws.com/zakunafu/vuxemerewigarorasumeli.pdf
    • https://uploads.strikinglycdn.com/files/34e25f72-bd2a-4883-8832-45824cfa04f6/15291470476.pdf
    • https://s3.amazonaws.com/wezukep/4300497577.pdf
    • https://s3.amazonaws.com/dubiditiginowo/65945155053.pdf
    • https://uploads.strikinglycdn.com/files/d409154e-b361-475b-94ec-8e28d92c6a32/pofakezanunapojiloj.pdf
    • http://fufudaloxola.onlinewebshop.net/pdf_annotator_download_free.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_off0000eb0e.bin
406cc933fc0da75d06a08031044b2ef17a72c5658353fe0adc4c446680084505		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEB0E 5448 bytes
font_01_sfnt_off0000fd88.bin
cfb4f9631635499b7267205d175c9be9ce7bcff903d9e0d7a43587ad75e7e2a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFD88 10988 bytes

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