Malicious PDF — malware analysis report

Static analysis result for SHA-256 3566f61a7800b383…

MALICIOUS

PDF

83.1 KB Created: 2021-03-23 23:36:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 90af3e6ae45a28b201c93ef805833eb7 SHA-1: 6336480f81b3a6b3d11d860f641e670fe192358e SHA-256: 3566f61a7800b383ddef053463f8fff30011e7b8ec052ddaa0549c858857e16b
126 Risk Score

Malware Insights

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

This PDF file was flagged by ML classifiers and ClamAV as malicious, indicating it is likely a phishing or malware delivery attempt. The document body contains a search query for 'town of hempstead sanitation number', and an embedded URI points to a URL that likely hosts a malicious payload or phishing page. The presence of numerous external links suggests a link farm used for obfuscation or to host multiple malicious destinations.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://jumiwimov.ru/wix?keyword=town+of+hempstead+sanitation+number PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4409607/normal_60370ece0c69a.pdfIn PDF document text
    • https://cdn.sqhk.co/ripalufix/rhgFdjd/galaxy_defense_hack_apk_download.pdfIn PDF document text
    • http://xalenupom.getenjoyment.net/xepuximekumajir.pdfIn PDF document text
    • https://cdn.sqhk.co/rinovizifim/DFijIvR/horror_sounds_of_the_night_mp3_download_pagalworld.pdfIn PDF document text
    • https://tupigupuji.weebly.com/uploads/1/3/4/7/134747984/ddff8ee.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455396/normal_5ff950061147c.pdfIn PDF document text
    • https://jamakebowixon.weebly.com/uploads/1/3/4/4/134477175/renusemilafij-maladuxen.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462362/normal_601af7b53916d.pdfIn PDF document text
    • http://fuvidevifa.scienceontheweb.net/writing_skills_book.pdfIn PDF document text
    • https://povutepumik.weebly.com/uploads/1/3/2/7/132741486/9742203.pdfIn PDF document text
    • https://cdn.sqhk.co/dutudovajud/cbgfjeP/foguwoma.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403421/normal_600bec95a2c13.pdfIn PDF document text
    • https://cdn.sqhk.co/fujonexa/ii8hggh/download_monster_craft_2_mod_apk.pdfIn PDF document text
    • https://zikamesezelili.weebly.com/uploads/1/3/4/8/134857079/fefomimuze.pdfIn PDF document text
    • http://nufivuzelikonax.getenjoyment.net/23979980630.pdfIn PDF document text
    • https://gipulafu.weebly.com/uploads/1/3/4/4/134442702/f681c8.pdfIn PDF document text
    • https://cdn.sqhk.co/wazuvegox/iEjhFjc/ligovol.pdfIn PDF document text
    • https://voperupazekeko.weebly.com/uploads/1/3/4/5/134505312/rewusubonexisefupok.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379053/normal_5fee08782968a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://ruruwuvatokatal.onlinewebshop.net/how_to_test_a_zener_diode_voltage.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2dfa984e-e87d-4df8-9eea-acdea41ba376/are_browning_guns_still_made_in_belgium.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5cf3251c-2f88-43fc-bd42-e2da9e0ea0c8/hamlet_soliloquy_act_3_scene_2_paraphrase.pdfIn PDF document text
    • http://xomapagovujux.atwebpages.com/lineas_horizontales_y_verticales.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7f67101-7938-438f-a6d7-0b49938f623a/book_thief_summary_by_chapter.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76c58f05-f688-41c7-8c02-1503f0709771/shirley_jackson_short_stories_the_possibility_of_evil.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_off0000f6ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6AD 5312 bytes
SHA-256: 6beb435e5e7380cc674101d136ef700ba01efdea5f639334b3a78907001d2c6f
font_01_sfnt_off0001088a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1088A 11268 bytes
SHA-256: 51f7271c4d123f35647ac756bdeb27485c12d87484a5241e0d96b2afc6a38799
font_02_sfnt_off00012edf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12EDF 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f