Malicious PDF — malware analysis report

Static analysis result for SHA-256 020b911ab0c6d8b8…

MALICIOUS

PDF

88.3 KB Created: 2021-04-24 01:29:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 4c4a098e8581df20adf8aa30029b6dcf SHA-1: 8d94170753f83315606f1943eb4b46ab6b979676 SHA-256: 020b911ab0c6d8b8cb80acc64044f88bf1767cbf9307a05def37cbedf146ab0d
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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://mezovuduw.ru/strik?utm_term=what+are+resistance+band+exercises PDF link annotation
    • http://infonewsuk.site/rixanatifonapitafaxemfwb9d.pdfIn PDF document text
    • http://beautysale.site/missing_cursor_windows_10_lenovowzsto.pdfIn PDF document text
    • https://cdn.sqhk.co/zejegure/giqR1ZK/twisters_menu_albuquerque.pdfIn PDF document text
    • http://yourbigdick.space/63170112002blw91.pdfIn PDF document text
    • http://citruss.space/who_made_up_the_three_estates_of_the_estates_general_in_francek2czj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421213/normal_603e64513ebbd.pdfIn PDF document text
    • https://cdn.sqhk.co/pitekofotada/aXjiyha/2_in_1_air_hockey_foosball_table.pdfIn PDF document text
    • https://cdn.sqhk.co/wamitavixitu/1hchfot/87505460569.pdfIn PDF document text
    • http://jojalipubawil.22web.org/bass_booster_equalizer_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/tegasipitif/johjEJ7/73327793334.pdfIn PDF document text
    • http://nevodoma.iblogger.org/zufesatosuwewuzurusododi.pdfIn PDF document text
    • http://olipaka.xyz/what_are_the_qualities_of_pleasing_personality7n1vo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454306/normal_605dc542dfd64.pdfIn PDF document text
    • http://jesuter.22web.org/anfotericina_b_convencional_bula.pdfIn PDF document text
    • http://zexijofig.iblogger.org/rudram_english_download.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
    • https://dbb1fad9-9c05-458f-9e32-bc0b7f65d7ec.filesusr.com/ugd/451461_6ec6b8a213d14c3080fffdf2a698521b.pdf?index=trueIn PDF document text
    • https://4f65501f-cdae-4966-b9db-49b15ad9d196.filesusr.com/ugd/52b593_e281013d87814ae5b50bf93f01ce8fe7.pdf?index=trueIn PDF document text
    • https://f238abdf-92e3-4651-90df-65b6e8a648d9.filesusr.com/ugd/99965f_3d8e9c66d4c24e0cbb18e31f2ef57111.pdf?index=trueIn PDF document text
    • http://pofutujasex.rf.gd/abolition_of_transatlantic_slave_trade.pdfIn PDF document text
    • http://kobaguwo.epizy.com/10986661266.pdfIn PDF document text
    • http://vaxotofeguzika.rf.gd/body_parts_in_english.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_off00010eca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10ECA 4892 bytes
SHA-256: a56adb6b551e6772574630125ed75d21d5d83d7d5c7dedb7fbcf5c6e80f8746a
font_01_sfnt_off00011f63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F63 11028 bytes
SHA-256: 0261a36b5925f3219be0bb87e5a5791cb9cb2da10b0e604346bc94f4f75b67ef
font_02_sfnt_off00014510.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14510 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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