Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fe4b89a4cf13589…

MALICIOUS

PDF

80.3 KB Created: 2021-06-01 05:32:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 15c60f8a0fe73505a870a8bc0143765e SHA-1: e27f07a3f5d8e442e1b82afe7732e289cfcc7078 SHA-256: 1fe4b89a4cf135896718927e9b4f986bf7d78427415034497e96f3cd64377336
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, a technique often used in link farm attacks to boost SEO for malicious sites or to distribute phishing content. The embedded content suggests a lure related to gaming settings, directing users to a URL that appears to be part of this link farm. ClamAV and ML classifiers strongly indicate maliciousness, likely phishing or a trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://chcial.ru/pbw?utm_term=gameloop+pubg+sensitivity+settings+2021
    • https://xukutejupu.weebly.com/uploads/1/3/4/4/134487517/jaxava-regawuzilixikad-lupexofa.pdf
    • https://femomupine.weebly.com/uploads/1/3/4/4/134458898/31ee48f7145d6e.pdf
    • https://welomutulek.weebly.com/uploads/1/3/4/8/134873792/zinawajazi.pdf
    • https://vafubetuxako.weebly.com/uploads/1/3/4/5/134503762/ligoxebevaf.pdf
    • https://rekenapun.weebly.com/uploads/1/3/4/8/134851377/2670286.pdf
    • https://zegamabifogur.weebly.com/uploads/1/3/4/6/134648685/eff93881c96e145.pdf
    • https://cdn-cms.f-static.net/uploads/4423471/normal_6067b5ee76a8a.pdf
    • https://jofuwutiduf.weebly.com/uploads/1/3/4/7/134728528/2974743.pdf
    • https://cdn-cms.f-static.net/uploads/4464722/normal_606dc807d9273.pdf
    • https://cdn-cms.f-static.net/uploads/4459935/normal_5fd937613b2a3.pdf
    • https://tolisopedigaw.weebly.com/uploads/1/3/4/7/134708633/1711882.pdf
    • https://jasenumuruj.weebly.com/uploads/1/3/5/3/135309327/a6c4aba2.pdf
    • https://fonabanobegax.weebly.com/uploads/1/3/1/6/131636781/kerutumovabid.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://lijegazoz.pbworks.com/w/file/fetch/144416097/vida_y_muerte_en_la_mara_salvatrucha_characters.pdf
    • http://kalunagepigi.pbworks.com/w/file/fetch/144424902/bawanuvi.pdf
    • http://lekipirunezi.pbworks.com/f/the_delectable_negro_free.pdf
    • http://muxopal.pbworks.com/f/vukezebano.pdf
    • http://wiwedano.pbworks.com/f/wings_of_fire_starflight_x_fatespeaker_lemon.pdf
    • http://fodorafirig.pbworks.com/w/file/fetch/144435147/fixakuju.pdf
    • http://risoxef.pbworks.com/w/file/fetch/144436755/who_compiled_nalayira_divya_prabandham.pdf
    • http://gazumadu.pbworks.com/f/how_do_you_say_sacroiliac_joint_dysfunction_in_spanish.pdf
    • http://pezeliv.pbworks.com/w/file/fetch/144427011/61117999989.pdf
    • http://pezeliv.pbworks.com/w/file/fetch/144423807/25493864332.pdf
    • http://kolelulu.pbworks.com/f/605134733.pdf
    • http://kolasotosexu.pbworks.com/f/friction_on_horizontal_and_inclined_plane_lab_report.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f9f4.bin
48600358a92b669ae989b597d7eebe328aab59173e7347211b77456485a5ca18		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF9F4 5704 bytes
font_01_sfnt_off00010d61.bin
991a80e59e02185dc20bb343183c51892678e3149a30688dd38733f6e3cee4a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10D61 11108 bytes

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