Malicious PDF — malware analysis report

Static analysis result for SHA-256 20e45fa19ab87571…

MALICIOUS

PDF

81.3 KB Created: 2021-02-24 01:38:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 9d59a603cd75a071d9dd86743a20925a SHA-1: d4ad71574be9cb840d8f84ad8f94cc234e6555b0 SHA-256: 20e45fa19ab875718c866b2a9eb933754c776e515d784b70f53ef14e45d2c866
194 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and ML classification. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users. The presence of a 'download button' lure further supports a malicious intent to trick users into clicking through to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 7

  • 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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=halo+ce+aimbot+2020 PDF link annotation
    • https://guvijubeb.weebly.com/uploads/1/3/5/3/135318684/wulov_nifewajawiv.pdfIn PDF document text
    • http://samo-katim.ru/38346571964rmk4a.pdfIn PDF document text
    • https://cdn.sqhk.co/javomekoru/jvhfPNA/my_story_malayalam_movie_song_lyrics.pdfIn PDF document text
    • https://cdn.sqhk.co/wazafanez/1otQxI4/17442767514.pdfIn PDF document text
    • https://winuvepesedop.weebly.com/uploads/1/3/4/4/134476249/mopakozam.pdfIn PDF document text
    • https://dupagerenukuxat.weebly.com/uploads/1/3/4/7/134751723/seridoviz.pdfIn PDF document text
    • http://instapriz24.online/tractor_pulling_calendar_2020qwq5s.pdfIn PDF document text
    • https://cdn.sqhk.co/xexerekija/e5Yhjef/hovercraft_build_fly_retry_apk.pdfIn PDF document text
    • http://rastet-malysh.ru/niluvewiwojowogobojaztc4qs.pdfIn PDF document text
    • https://gitosupogule.weebly.com/uploads/1/3/2/7/132741155/9338fc.pdfIn PDF document text
    • http://dalnoboyi.xyz/pharr_road_animal_hospital_inckzzbg.pdfIn PDF document text
    • http://mavito.online/sovizinosajitejatelykm.pdfIn PDF document text
    • https://belifexemanugo.weebly.com/uploads/1/3/6/0/136051541/zafubevifuwatew.pdfIn PDF document text
    • https://vawoxaju.weebly.com/uploads/1/3/1/3/131379227/jumefirux-tuvikikixo-nabibewi.pdfIn PDF document text
    • http://reduslimitaly-ufficiale.site/x-_core_galactic_plaguecxxr5.pdfIn PDF document text
    • https://torovuzexas.weebly.com/uploads/1/3/2/7/132710592/2403700.pdfIn PDF document text
    • http://busivel.xyz/sultan_forces_modkedyj.pdfIn PDF document text
    • https://cdn.sqhk.co/mulepava/ghhgeSL/78886444496.pdfIn PDF document text
    • https://cdn.sqhk.co/vetelojid/j3hcjeK/sesarepenowep.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://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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d5fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5FC 4728 bytes
SHA-256: 9d26610192b03f2bfdce7083d40346ae147a7a75f911b3f499d8e9ed4b5add22
font_01_sfnt_off0000e60d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE60D 14476 bytes
SHA-256: 8d3792d39d7bf5b1d0b0b196dea720e9d07f12b4fba0beae72f9bbc9723f3cba
font_02_sfnt_off000112e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112E6 16660 bytes
SHA-256: 71fe66e8a900eabe62c773f6b9b467243c87e6d484dd0ea34a22194082714177
font_03_sfnt_off00012919.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12919 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f