Malicious PDF — malware analysis report

Static analysis result for SHA-256 0eaa8c3e24f2e761…

MALICIOUS

PDF

85.6 KB Created: 2021-02-19 07:29:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 60f79b2d293c4cd28e12c4971f6a4bec SHA-1: dc7ff3acf169688dab78a09edf583fba589c4191 SHA-256: 0eaa8c3e24f2e7610f6facdba59b93bfeca5d9de318a9d14a22e62cb92380177
184 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs pointing to suspicious domains, identified as a malicious redirector and a link farm on disposable hosting. The document body, though heavily obfuscated, suggests a lure related to song lyrics, likely to trick users into clicking the malicious links. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://yafferge.ru/123?utm_term=lirik+lagu+hello+adele+dan+terjemahannya In PDF document text
    • https://cdn.sqhk.co/sowojusawepu/FDjhXjj/radio_fm_104._7_en_vivo.pdfIn PDF document text
    • https://cdn.sqhk.co/nusuguponu/Qeuhgzd/funny_animal_memes_2020.pdfIn PDF document text
    • http://ribupisid.22web.org/aplicaciones_android_mas_usadas_en_cuba.pdfIn PDF document text
    • https://cdn.sqhk.co/mavozopofug/bia5oih/bedroom_furniture_design_catalogue.pdfIn PDF document text
    • https://cdn.sqhk.co/kanereneb/hjMjahf/mad_skills_motocross_2_hack_version_download.pdfIn PDF document text
    • https://cdn.sqhk.co/keximovib/dMijY9l/clown_neighbour_escape.pdfIn PDF document text
    • https://cdn.sqhk.co/safajoju/74hhjiH/craft_vinyl_warehouse_near_me.pdfIn PDF document text
    • http://gojovobikazed.iblogger.org/atlassian_marketplace_confluence_templates.pdfIn PDF document text
    • https://cdn.sqhk.co/rixutixim/uigegdk/xiloxonono.pdfIn PDF document text
    • https://cdn.sqhk.co/nevupediwix/ibieja0/play_store_app_plants_vs_zombies_2_download.pdfIn PDF document text
    • http://lnstagram-copyright-confirms.com/diabetes_diet_chart_in_urduhsxaq.pdfIn PDF document text
    • http://sis-paypal.com/954536497058t2kq.pdfIn PDF document text
    • http://xtreme-sport.ru/sea_of_thieves_guide_shroudbreakertipjc.pdfIn PDF document text
    • https://cdn.sqhk.co/zofizitene/kFhhzgh/19010417786.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lowadof.epizy.com/deloitte_thailand_transparency_report.pdfIn PDF document text
    • http://rowabereduxafu.epizy.com/pirates_revenge_arcade_game_manual.pdfIn PDF document text
    • http://tanozetodane.rf.gd/berserk_volume_2.pdfIn PDF document text
    • http://xifabemifuxiza.rf.gd/free_calendar_templates_2018-_19.pdfIn PDF document text
    • http://tokumizexafu.epizy.com/mijitoponasuva.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dfc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFC8 5244 bytes
SHA-256: 42e72310a51269c1f4267eb84b59fc474679314c3eb8d86eaff4c120b0ba727a
font_01_sfnt_off0000f17b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF17B 4056 bytes
SHA-256: 8e6a95977661d8edafe6226f7de9da61337c5b4ece93359f791922d3fabc9522
font_02_sfnt_off00010174.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10174 10892 bytes
SHA-256: cf9750581a22991f0f3e71014d9a48d66df334c9dddeedbb2ce0aa163c9a5bd1
font_03_sfnt_off000126bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126BD 23512 bytes
SHA-256: c6c34025251aacacef6f805e5aba3bea4839730c434e70c01917a3c94cc7f7a1