Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a506e9b62a0ad83…

MALICIOUS

PDF

70.7 KB Created: 2021-02-17 12:08:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 809a513ecf108641525778b47400181f SHA-1: 58c925654c84874ae98fac63f552038dc285344c SHA-256: 5a506e9b62a0ad83456f2b4ffe3b6abbd98fa0d155753a5b047ff2e40fcddb7d
244 Risk Score

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/wix?keyword=little+kate+ashby+alton+towers In PDF document text
    • https://static.s123-cdn-static.com/uploads/4416299/normal_5fe5b77ae755e.pdfIn PDF document text
    • https://cdn.sqhk.co/xolafunodo/8Vih8hd/cyber_hunter_mod_apk_revdl.pdfIn PDF document text
    • https://cdn.sqhk.co/votojuxosaf/9SgicBd/sad_tik_tok_ringtone_2020_download_mp3_pagalworld.pdfIn PDF document text
    • https://nipobajomofak.weebly.com/uploads/1/3/4/6/134641158/92fb4fa850612.pdfIn PDF document text
    • https://xopozutafedas.weebly.com/uploads/1/3/1/4/131453480/66744.pdfIn PDF document text
    • https://saxoxukodumixab.weebly.com/uploads/1/3/4/6/134635675/b62113839d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384164/normal_5fd639fc96f60.pdfIn PDF document text
    • https://cdn.sqhk.co/fapebenu/47ijDu5/asian_bird_fair_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/karapenakozi/AjdQ1ju/85798810127.pdfIn PDF document text
    • https://febavezexiwajo.weebly.com/uploads/1/3/4/7/134703432/a2df437.pdfIn PDF document text
    • https://fojomuku.weebly.com/uploads/1/3/4/4/134447263/nepikisodifo-bunikatuludul-filopizox.pdfIn PDF document text
    • https://cdn.sqhk.co/jebavimot/cM8rDke/maze_runner_scorch_trials_cast_interview.pdfIn PDF document text
    • https://kuxifegofemiza.weebly.com/uploads/1/3/4/8/134865321/wesovegutevarebefepu.pdfIn PDF document text
    • https://valodoxajub.weebly.com/uploads/1/3/4/4/134435871/2750402.pdfIn PDF document text
    • https://cdn.sqhk.co/zubixola/UiBEbZJ/gun_firing_ringtones_free_download.pdfIn PDF document text
    • https://raxelapanaf.weebly.com/uploads/1/3/4/7/134746791/sinewekosixor_pogutob.pdfIn PDF document text
    • https://radewisuvux.weebly.com/uploads/1/3/4/6/134689192/1350456.pdfIn PDF document text
    • https://senaduwofajix.weebly.com/uploads/1/3/0/7/130775021/zepajusokare.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446029/normal_5fda734682907.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d9a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9A9 5112 bytes
SHA-256: 7c67eba270039a20163290d4212e470c29e574d6aa28c91f4c9cc766261f79fd
font_01_sfnt_off0000eb1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB1C 9984 bytes
SHA-256: e7fe3805ed0e0bef09a55dcc5eca20b432e32f2ebfddfb7e7c2e41c248109dd9