Malicious PDF — malware analysis report

Static analysis result for SHA-256 8deea3ab7fc350e1…

MALICIOUS

PDF

71.4 KB Created: 2021-02-04 05:58:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 259dc196f5042877004c74fe0b52b871 SHA-1: 4c2c2fb45231afb6654d7dcbab57ef69b1e885dc SHA-256: 8deea3ab7fc350e1109dde0689541f5e59cfdfc44970c875a9f602315f38f4a7
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. It contains numerous external URIs pointing to potentially malicious domains, suggesting it's part of a link farm designed to redirect users to harmful content. The presence of external URIs and the overall structure strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://jottigo.ru/aws?utm_term=ancient+history+book+pdf+for+upsc PDF link annotation
    • https://cdn.sqhk.co/dawafawux/yhdhi1T/fatugov.pdfIn PDF document text
    • http://rat-red.space/ganuxulagosadopobusirokes2cw7.pdfIn PDF document text
    • https://cdn.sqhk.co/vozeseseber/gjhb5ji/rusty_memory_vip_survival_apk_free_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484399/normal_5ff2fe7392c14.pdfIn PDF document text
    • http://goduvide.22web.org/blackboard_app_for_android.pdfIn PDF document text
    • http://tehnotop.space/winky_lux_lip_balm_ultahxweu.pdfIn PDF document text
    • https://cdn.sqhk.co/gabadifofibo/ihd4gjh/stickman_superhero_hack_mod_apk.pdfIn PDF document text
    • http://inmyshtangen.xyz/maplestory_m_buccaneer_skill_guiderosd2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392666/normal_60155985d587c.pdfIn PDF document text
    • https://cdn.sqhk.co/kululojilo/gftih4i/43917855493.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484356/normal_5fe7f1b5e37c4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://toramowajo.epizy.com/99740894570.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_off0000d202.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD202 5296 bytes
SHA-256: 938b216b78188f813b8197fcf93599467f12cc59338fdf52538835cca7d4cbe6
font_01_sfnt_off0000e403.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE403 1800 bytes
SHA-256: a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620
font_02_sfnt_off0000ec90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC90 10496 bytes
SHA-256: 37336548d7f43eb7d185a69fc61d464f2d6e76f77ce461f164024d259bb73c13

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