Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6814c9d95ec10fc…

MALICIOUS

PDF

80.5 KB Created: 2021-02-16 09:49:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 9164ca4b7f0a635d6d1194302acf7459 SHA-1: 2c9910b84e76834db2d9e161c7f39dc6674ca4f3 SHA-256: f6814c9d95ec10fc46abb567ed9e08227f113be64f122720fba76522df1c833a
156 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://maypoin.ru/strik?utm_term=how+to+remove+ge+gas+stove+top PDF link annotation
    • http://sell-toclick.online/english_activity_book_for_kindergartenu3xe0.pdfIn PDF document text
    • https://cdn.sqhk.co/xolovagi/iggThgb/sukojibujorepugebeb.pdfIn PDF document text
    • https://cdn.sqhk.co/tijinujul/a4mge2B/ghost_killer_1992_full_movie.pdfIn PDF document text
    • http://lyudi23.ru/rca_rlded3956a_reviewnpzel.pdfIn PDF document text
    • http://lnstagramsupportingcenter.com/history_alive_textbook_8th_grade_answer_keyt7jkr.pdfIn PDF document text
    • http://kmikaerfs.ru/44890948577fry15.pdfIn PDF document text
    • https://mudulavodeg.weebly.com/uploads/1/3/1/0/131070753/e548ac9421fc.pdfIn PDF document text
    • https://zisovubuzuteb.weebly.com/uploads/1/3/6/0/136086112/6294569.pdfIn PDF document text
    • https://cdn.sqhk.co/videbamez/fUaPX8k/jilizazusodasigozujopamo.pdfIn PDF document text
    • https://gapidekejoz.weebly.com/uploads/1/3/4/8/134876705/donob_poxoju_mopubufipilira.pdfIn PDF document text
    • https://cdn.sqhk.co/sajixobuko/gSDjiaR/jezarugutokujowukiroxig.pdfIn PDF document text
    • https://cdn.sqhk.co/wibononuve/Ggf61jb/get_real_followers_and_likes_for_instagram.pdfIn PDF document text
    • http://littlenat.space/niwojovylajo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/fukezavazuj/59769156294.pdfIn PDF document text
    • https://s3.amazonaws.com/semuxemakaw/buccaneer_maplestory_m_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/numegubowalonan/lopotaxe.pdfIn PDF document text
    • https://s3.amazonaws.com/zabevog/58374202450.pdfIn PDF document text
    • https://s3.amazonaws.com/benubapopikaj/eset_antivirus_mac.pdfIn PDF document text
    • https://s3.amazonaws.com/duzexefemosaxe/todiwetunozuru.pdfIn PDF document text
    • https://s3.amazonaws.com/xuxifuzituwu/infographic_animation_after_effects_template_free.pdfIn PDF document text
    • https://s3.amazonaws.com/xabalaru/nuclear_bomb_sound_effect.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f09d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF09D 4856 bytes
SHA-256: 17fe486bbb8fd3557de6acc82740c53e75a7ee17af77242bb2c834488326f4fc
font_01_sfnt_off00010130.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10130 10820 bytes
SHA-256: 8fee4e96845c884b979f7fb5acbd5c26718649f4c634d739fe7c7d47a29c7796
font_02_sfnt_off0001262e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1262E 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

Open this report in the interactive analyzer, or submit your own file for analysis.