Malicious PDF — malware analysis report

Static analysis result for SHA-256 ced8aa4bf3e03655…

MALICIOUS

PDF

74.6 KB Created: 2021-03-23 23:15:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 5cb45de93a33619b4323af3e9c4028a0 SHA-1: 3431870e7864f4ace1f29c2cc24e6853ee0f7f37 SHA-256: ced8aa4bf3e0365582700504d1d664127855dacb27ed76a75a28119d66130c3f
126 Risk Score

Malware Insights

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

The PDF file contains embedded URLs and appears to be a link farm designed to redirect users to potentially malicious websites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The document body, though partially corrupted, suggests a lure related to 'harbor breeze ceiling fan remote installation'.

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 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.
  • 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://druttle.ru/wix?keyword=harbor+breeze+ceiling+fan+remote+installation PDF link annotation
    • http://rejamar.sportsontheweb.net/15451643223.pdfIn PDF document text
    • http://tasenedujusinu.iblogger.org/free_email_list_2017.pdfIn PDF document text
    • http://tedesuvukifa.iblogger.org/how_to_cook_brisket_in_weber.pdfIn PDF document text
    • https://cdn.sqhk.co/gusisitixinu/hRjhD6g/nes_emu_roms_ios.pdfIn PDF document text
    • http://zafikapasipugog.medianewsonline.com/how_to_draw_a_autumn_tree_easy.pdfIn PDF document text
    • https://cdn.sqhk.co/nuxarufodir/igdiczh/mcdonalds_online_job_questionnaire_answers.pdfIn PDF document text
    • https://cdn.sqhk.co/fikalibumi/aQicSVD/42243377493.pdfIn PDF document text
    • http://vonupavuja.22web.org/arduino_language_sinhala.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zogufisuru.epizy.com/love_ringtones_telugu_new.pdfIn PDF document text
    • https://s3.amazonaws.com/batiku/pte_describe_image_line_graph_template.pdfIn PDF document text
    • https://s3.amazonaws.com/bovenotojitowe/binomische_formeln_bersicht.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b146588-59ca-49f0-a30a-a0ff21645e71/where_did_kaash_paige_go_to_high_school.pdfIn PDF document text
    • https://s3.amazonaws.com/tetofamuxulil/bergeys_manual_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/925e307a-93be-41d2-969d-1311c28491b3/murachs_php_and_mysql_2nd_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/zodererezuzuxi/chosen_house_of_night.pdfIn PDF document text
    • http://bomigezi.epizy.com/91260168278.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/46a45ef7-6816-456b-9c76-2c7ef9a7cf6f/weneti.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5164f534-8bfe-4cdd-b825-5678cc21dcd3/mufarodeg.pdfIn PDF document text
    • http://foraxevub.rf.gd/skyrim_jaysus_swords_locations.pdfIn PDF document text
    • https://s3.amazonaws.com/vixuwogetiv/chamma_chamma_new_video_song_720p.pdfIn PDF document text
    • http://bakefedov.epizy.com/foam_sword_fighting_sport.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_off0000e5ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5EF 5352 bytes
SHA-256: a599edced46ce0bc2f37294b82a2ff0ad0dad15e4252fa407c69307441f2200f
font_01_sfnt_off0000f818.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF818 10944 bytes
SHA-256: 3e7740155fdc63d169773cbd1c2bd29aa301ae71a175d5d947601f1e5128f59b

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