Malicious PDF — malware analysis report

Static analysis result for SHA-256 f56e84c9dae0d381…

MALICIOUS

PDF

77.0 KB Created: 2021-04-05 11:19:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 7df2b999488d8031f2b1c4aca3af504e SHA-1: 5c40a70fbb43656cdbfd5f7bb2a5110adcbb3f1b SHA-256: f56e84c9dae0d381b5484ef59418dafb01c442c41229495f7c1c55161e3f8580
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, many of which are to suspicious domains, and is flagged by ClamAV as Pdf.Phishing.Trojan. The document body, though heavily obfuscated, contains references to 'Azhar movie hd 1080p free', suggesting a lure for users seeking pirated content. The presence of many external links indicates an attempt to redirect users to malicious sites for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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/123?utm_term=azhar+movie++hd+1080p+free PDF link annotation
    • http://erse.xyz/reinforced_concrete_design_worked_examplesxh1nu.pdfIn PDF document text
    • http://krokoboko3.xyz/cat_in_the_hat_cast_costumenc9fd.pdfIn PDF document text
    • https://cdn.sqhk.co/zunezafi/QifijVx/xurozep.pdfIn PDF document text
    • http://xtreme-sport.ru/verbs_for_each_level_of_blooms_taxonomycb84z.pdfIn PDF document text
    • https://cdn.sqhk.co/rogekanus/hhgsidK/find_object_in_all_databases_sql_server.pdfIn PDF document text
    • http://visiblawty.com/zatixozijubuvetotinojxoxod.pdfIn PDF document text
    • https://cdn.sqhk.co/manoxixo/QEEhajj/90688470955.pdfIn PDF document text
    • http://wei-nmvc.com/22908420313t0qlz.pdfIn PDF document text
    • http://hotita.space/how_to_change_adt_safewatch_pro_3000_alarm_codeilk36.pdfIn PDF document text
    • http://canlisohbetim.net/jake_gyllenhaal_bubble_boy_mysteriojzt6i.pdfIn PDF document text
    • https://cdn.sqhk.co/bibikodazit/hfidSgi/set_caller_tune_new_ringtone_2019_apk_download.pdfIn PDF document text
    • http://bighome.space/mitosis_in_plant_cells_lab_28_answersjy1gz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://b73b9701-b1df-43be-b031-73419f87697c.filesusr.com/ugd/bfbd96_80d7650b2489499d9950c36ac415b39b.pdf?index=trueIn PDF document text
    • https://aa3bb5c3-2bd4-4791-9e2a-6e31d5009b04.filesusr.com/ugd/60e703_68814e143e0d46e588ebabb8d8e7f838.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xesigeze/chrome_for_windows_8_32bit.pdfIn PDF document text
    • https://s3.amazonaws.com/rixevozajixezos/rovuvigefi.pdfIn PDF document text
    • https://s3.amazonaws.com/nefagolom/namakam_chamakam_telugu.pdfIn PDF document text
    • https://s3.amazonaws.com/najubu/10401247355.pdfIn PDF document text
    • https://s3.amazonaws.com/latufenaw/anforderungsmanagement_anforderungen_formulieren.pdfIn PDF document text
    • https://s3.amazonaws.com/baposivarabuj/47692867435.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_off0000ef85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF85 5560 bytes
SHA-256: 98c0cc549f2cea63e414836d1223cf4ceaaa381c4955fc40c74da0af69f43ff8
font_01_sfnt_off00010259.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10259 10660 bytes
SHA-256: a00cd1bb9390645d020cc65bf62c4bfbf344195c93b8ffaa0e480ef2758f8850

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