Malicious PDF — malware analysis report

Static analysis result for SHA-256 9dd37f5d89804ee9…

MALICIOUS

PDF

78.4 KB Created: 2021-02-14 16:39:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: c2be83ed866b6fcdf0e6fca584fb0379 SHA-1: 96e5a656a5aca887cc858fb1dc6f2c4185998868 SHA-256: 9dd37f5d89804ee9692660010911f3cd205ce0e490084740f952862e767aeb48
186 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or SEO spam operation. The embedded URLs point to various PDF files, likely intended to redirect users to malicious or phishing sites. No scripts were extracted, but the PDF structure and numerous external links are indicative of a phishing or malicious redirection campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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://maypoin.ru/wb?keyword=cleveland%20azur%20lane%20equipment%20guide PDF link annotation
    • https://cdn.sqhk.co/fegojujor/eihIjjq/animal_stack_3d_mod.pdfIn PDF document text
    • https://cdn.sqhk.co/vuvupewog/wibSjee/mountain_bike_shops_around_me.pdfIn PDF document text
    • http://misefaditiza.22web.org/teziwa.pdfIn PDF document text
    • https://pimalikatirowo.weebly.com/uploads/1/3/4/0/134040386/79c30ca11916.pdfIn PDF document text
    • https://cdn.sqhk.co/pekotegafod/jerhajf/scary_skins_for_roblox_boy.pdfIn PDF document text
    • http://muzidos.iblogger.org/nimeb.pdfIn PDF document text
    • https://cdn.sqhk.co/fiwujumejuf/etesjdv/inox_hardware_trading.pdfIn PDF document text
    • https://gejowarog.weebly.com/uploads/1/3/2/7/132740172/sarejopomeputot_roxofopal_xiwemasota.pdfIn PDF document text
    • https://cdn.sqhk.co/zasemewiti/gjujatE/concordia_university_st_paul.pdfIn PDF document text
    • https://cdn.sqhk.co/fakosopalo/ighZgfE/my_android_version_update.pdfIn PDF document text
    • https://cdn.sqhk.co/vukupamita/shiZB3T/3_kingdoms-_th_online.pdfIn PDF document text
    • https://cdn.sqhk.co/tijatabov/r3ijxid/41050738383.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fujadabez/repaj.pdfIn PDF document text
    • https://s3.amazonaws.com/bisegilupuf/informacion_de_centauro_en_ingles.pdfIn PDF document text
    • https://s3.amazonaws.com/vasofirida/bidumerejivuroriberu.pdfIn PDF document text
    • http://nadefivetokilak.rf.gd/anti_spyware_for_samsung_android.pdfIn PDF document text
    • http://gonidiwofove.epizy.com/aamir_khan_ke_gane_video.pdfIn PDF document text
    • http://sudebesiku.epizy.com/cheerleader_uniform_diy.pdfIn PDF document text
    • https://s3.amazonaws.com/kegovev/sprint_planning_template_excel.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_off0000e9c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9C7 5240 bytes
SHA-256: a517ed3c3ca25ce53184b1828995cb5e80752680112f9ca7aa9e384e8c8fa53e
font_01_sfnt_off0000fb87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB87 15712 bytes
SHA-256: b7181260f470ca3b0bad0b73c834c870db3cf48530ff1ac80ec74ae12fa24b8b

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