Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8af515a49db3126…

MALICIOUS

PDF

88.7 KB Created: 2021-03-15 07:10:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: fca2c9946787bceac96e4f46c6bb084d SHA-1: 27888e320d490a71b0d618ec4e9f975b67825ae3 SHA-256: d8af515a49db31267adec85b56cccf138d083d365abb4ff1b2883ae23200f7c3
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

The PDF was flagged by ML and ClamAV as malicious, with specific heuristics indicating it functions as a link farm on disposable hosting. The embedded URLs, such as 'https://leonvi.ru/wix?keyword=lavaloon+attack+th9' and 'http://dapajibidamazed.mypressonline.com/94231207155.pdf', point to suspicious domains. While no scripts were explicitly extracted, the nature of the PDF and its embedded links suggests it is designed to redirect users to malicious content, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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://leonvi.ru/wix?keyword=lavaloon+attack+th9 PDF link annotation
    • http://dapajibidamazed.mypressonline.com/94231207155.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465400/normal_602e3832d96a9.pdfIn PDF document text
    • http://jusapp.club/37646472252s8cgd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403672/normal_5fdb6deec205b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408987/normal_602aa2e37f577.pdfIn PDF document text
    • http://jadogaxarabu.mygamesonline.org/can_i_wash_my_face_after_using_sheet_mask.pdfIn PDF document text
    • http://instapriz.website/contabilidad_de_costos_gonzalo_sinisterra_gratise3nyu.pdfIn PDF document text
    • http://3bureaureport.info/blockman_go_mod_apk_unlimited_allg2m4u.pdfIn PDF document text
    • https://cdn.sqhk.co/todezuzutito/bOhjjbb/39145824935.pdfIn PDF document text
    • https://cdn.sqhk.co/zozusexub/jcgfggu/mowejomodonuwuwiluz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461746/normal_6044936c6e00d.pdfIn PDF document text
    • http://misstourist.info/rcbs_shotshell_reloading_manualuh7iz.pdfIn PDF document text
    • https://cdn.sqhk.co/wapisuda/ejjXb79/jufuxoloni.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406516/normal_6047d76beb7e2.pdfIn PDF document text
    • http://mattelipsticks.site/why_do_germinating_peas_undergo_cell_respiration4vyrs.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365628/normal_5fd9f58a66c18.pdfIn PDF document text
    • http://sakulog.sportsontheweb.net/ortopedia_pediatrica_libro.pdfIn PDF document text
    • https://cdn.sqhk.co/minamojazi/Ygp9Lhd/best_board_games_2020_family_uk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470222/normal_6039fa01a4d1a.pdfIn PDF document text
    • http://dotavulilego.mypressonline.com/scratch_programming_tutorials_for_beginners.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451047/normal_5fd0926f8c43c.pdfIn PDF document text
    • https://cdn.sqhk.co/vekuperik/ikphfLT/human_fall_flat_xbox_walkthrough_castle.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e004190-3467-45e5-81d9-079580fa86e9/89583083391.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9eb7c10b-56d4-4565-8ea3-57f30c29d306/toshiba_hdd_dvd_video_recorder_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b49d6e5-2efd-445a-870e-d7debf2261e7/2012_sonata_hybrid_battery_location.pdfIn PDF document text
    • http://sadoboxijowem.myartsonline.com/biochip_applications.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8fceccd3-8379-4a3c-b7e7-e17fc8664b24/fejanafosaxokitalaxolager.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_off00011406.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11406 4832 bytes
SHA-256: 9055e82a4640f840c16680feb1076e55a90a527e42004dbc01be765d95253e2a
font_01_sfnt_off00012478.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12478 1936 bytes
SHA-256: 21a7146106e2ad29a4dcc6aa55cee169416400570e2b3d493b6d071cb256f2f3
font_02_sfnt_off00012dba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12DBA 11400 bytes
SHA-256: 822b6c343f1cc20afd5f8cbd9612a644f96984ed06d35c4660d848a84806c5ea

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