Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fa2f3e22b35e74e…

MALICIOUS

PDF

66.5 KB Created: 2021-02-16 18:50:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 4b98000fcca3aacf7ee0454580477cc0 SHA-1: 20fdb74abbb9fc1771bcc02bd5fd16275aa4dfbe SHA-256: 2fa2f3e22b35e74e0a43e322728be63e52e1c1235b3992af6a2569c33f2cedf7
156 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to potentially malicious domains, suggesting a link farm or SEO poisoning tactic. The primary URL, 'https://leonvi.ru/123?utm_term=what+caused+the+bantu+migration+pdf', is presented as a search result, aiming to trick users into visiting a malicious site. ClamAV detection and ML classification further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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/123?utm_term=what+caused+the+bantu+migration+pdf PDF link annotation
    • http://centerbluebadge.com/669293334742c6zo.pdfIn PDF document text
    • http://takudogifox.22web.org/apache_solr_for_windows.pdfIn PDF document text
    • http://nudazizefa.22web.org/vocal_remover_free_for_windows_10.pdfIn PDF document text
    • http://winoorama.site/53789850023n9o.pdfIn PDF document text
    • https://gidixolatuloxag.weebly.com/uploads/1/3/1/0/131071157/1916315.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://s3.amazonaws.com/ligole/happy_wheels_mod_apk_android_1.pdfIn PDF document text
    • http://penabak.epizy.com/zamobojewazimafutegekexid.pdfIn PDF document text
    • https://s3.amazonaws.com/lekezaru/sugogubevepajigudodelas.pdfIn PDF document text
    • https://s3.amazonaws.com/votubukaxogilix/bangla_movie_audio_song_free.pdfIn PDF document text
    • https://s3.amazonaws.com/bupesejirijejus/49084328846.pdfIn PDF document text
    • http://gagisejokunego.rf.gd/resident_evil_2_remake_trophy_guide_ps4.pdfIn PDF document text
    • https://s3.amazonaws.com/jarirotexab/wireless_network_watcher_free.pdfIn PDF document text
    • https://s3.amazonaws.com/boduxatavepe/83128890665.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_off0000b813.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB813 5572 bytes
SHA-256: a58e565f18cd0d6df6176ffe1a2de3e9418bb496311abd25b27775bd7903752c
font_01_sfnt_off0000cad2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAD2 10640 bytes
SHA-256: a6ab17f70300f7246722e4810066ea97dc3beb4cfc9ff5bdf8c6448025745e77
font_02_sfnt_off0000ef4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF4D 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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