Malicious PDF — malware analysis report

Static analysis result for SHA-256 20cf201c4a28e05b…

MALICIOUS

PDF

69.8 KB Created: 2021-02-10 03:15:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 57430aae35e2f5195a029218daabc4ff SHA-1: d88df3c0275c80c7b4189e00ed1249ff0e3e4c9e SHA-256: 20cf201c4a28e05b21f29a188c5bbcb653356b5d1f2079e74073b8c0208644a7
196 Risk Score

Malware Insights

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

The PDF contains numerous external links, many of which are part of a link farm designed to improve search engine rankings, a common tactic for phishing sites. The heuristic 'SE_MFA_LURE' indicates the document is designed to harvest credentials or abuse multi-factor authentication. The primary URL, 'https://jottigo.ru/aws?utm_term=access+my+icloud+on+android', suggests a lure related to account access, likely leading to a phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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://jottigo.ru/aws?utm_term=access+my+icloud+on+android PDF link annotation
    • https://cdn.sqhk.co/pozuwifofub/hdhfjgY/77034832389.pdfIn PDF document text
    • https://cdn.sqhk.co/xegogeji/gJjfngc/24020410615.pdfIn PDF document text
    • https://cdn.sqhk.co/tajixixejafi/wiaiijf/beyonce_jay_z_global_citizen_festival_setlist.pdfIn PDF document text
    • https://cdn.sqhk.co/kawiwitifa/icXidig/heir_of_light_tower_of_god.pdfIn PDF document text
    • https://cdn.sqhk.co/jogujufuza/Y9ihge5/ski_coat_pink.pdfIn PDF document text
    • https://dugitesabisaxo.weebly.com/uploads/1/3/4/3/134392589/lofezusuwegenopa.pdfIn PDF document text
    • https://cdn.sqhk.co/jinokazif/eagdW1F/refelokov.pdfIn PDF document text
    • https://cdn.sqhk.co/kasesiseb/csq0spo/98269706445.pdfIn PDF document text
    • http://grusha.space/balak_palak_full_movie_300mb3qejg.pdfIn PDF document text
    • http://scarcebook.com/adverbs_worksheets_grade_48gcwd.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/defipedibe/aambala_movie_song_hd.pdfIn PDF document text
    • https://s3.amazonaws.com/voxulija/allcast_apk_uptodown.pdfIn PDF document text
    • https://s3.amazonaws.com/sugowubuf/free_latest_version_of_whatsapp_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/vexeliku/kosukiputuvuxez.pdfIn PDF document text
    • https://s3.amazonaws.com/kizugokofo/school_gym_uniforms_near_me.pdfIn PDF document text
    • https://s3.amazonaws.com/miwolezedubujoz/39500870343.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_off0000d46d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD46D 5176 bytes
SHA-256: 066837770aab8d12f2f018707bd18ffb237de71f5c2ccf08e044221757e8df1c
font_01_sfnt_off0000e5f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5F7 10488 bytes
SHA-256: efdec03d0f03a9d98d970c7d8a31aea0a440a7c1539012efd6c66b068c0d5555

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