Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa0a834f9a7447c5…

MALICIOUS

PDF

74.1 KB Created: 2021-03-06 05:46:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: d08cefe48b9e06be797cd259d62de96b SHA-1: 89ced4dc0eff870b24c6aaea431cf473ae6f5ded SHA-256: aa0a834f9a7447c5e6ddf105ace707a5cd5a553a5024d315e5ed1d3eaf2adbbe
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, with one prominent URL pointing to a suspicious domain that appears to be part of a link farm designed to redirect users. The presence of a disposable hosting domain and UTM parameters further suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://xezojetit.ru/strik?utm_term=bear+snores+on+book+activities PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4475988/normal_602714123638a.pdfIn PDF document text
    • http://shopsmmv.site/formato_historia_natural_de_la_enfermedad_para_llenar0etqb.pdfIn PDF document text
    • http://kdghy.online/what_was_the_first_internal_combustion_engine_used_fora3jur.pdfIn PDF document text
    • https://xemibunadagom.weebly.com/uploads/1/3/4/6/134639404/de9415fba897.pdfIn PDF document text
    • http://snatural.space/zozivekasux1nsj.pdfIn PDF document text
    • https://tewazaxapij.weebly.com/uploads/1/3/4/8/134873756/4761163.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489838/normal_6036b1b8b7bdf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446511/normal_5ff57460c2b65.pdfIn PDF document text
    • https://zisamezasebav.weebly.com/uploads/1/3/3/9/133997726/5766154.pdfIn PDF document text
    • http://retys.fun/150507890194q445.pdfIn PDF document text
    • http://hangzhoumetal.ru/jojuredutanibaroniwursfoo.pdfIn PDF document text
    • https://benuwefijazom.weebly.com/uploads/1/3/4/8/134897428/zinivife_roput_kadikosegel_kivakilowujut.pdfIn PDF document text
    • http://montana-media.com/android_studio_jdk_directory6iwlx.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406223/normal_6022eacb9409f.pdfIn PDF document text
    • http://ozalupa.space/sniper_rifle_games_free_downloadrbbk9.pdfIn PDF document text
    • http://arendagg.xyz/delhi_metro_navigator_app_freegnrdq.pdfIn PDF document text
    • http://uber-global.com/xuzenibumoxinova1d2st.pdfIn PDF document text
    • http://mobijogizex.22web.org/degaxewutowobex.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://badubitoj.epizy.com/remington_700_sps_varmint_accuracy_308.pdfIn PDF document text
    • http://pidukuniwid.epizy.com/bollywood_dj_music_songs.pdfIn PDF document text
    • http://rimiwomo.epizy.com/24259834801.pdfIn PDF document text
    • http://faberaladaruz.epizy.com/21962302403.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_off0000e54a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE54A 5072 bytes
SHA-256: 29b1050af70a449ac7bb57d337f9c6299a1839df4f58bb5c8c4e0e3f06a6147f
font_01_sfnt_off0000f6a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6A6 10492 bytes
SHA-256: 3b880117a7158f02aedec5eada3ad8a196bc37a793c5238ca388282255dd152a

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