Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8ddd6903ff49930…

MALICIOUS

PDF

83.0 KB Created: 2021-04-27 06:56:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 14060db3fbea99b7c22bb91a222c861a SHA-1: 85bc3f0cc1a9893d60ec6c4bfdbd44d3f34d1df5 SHA-256: f8ddd6903ff499309471ba4df6c04750c61ec9c20079392dd46e528f8ca5b142
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 0.9985

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 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://ponafet.ru/strik?utm_term=louis+the+fish+summary PDF link annotation
    • https://cdn.sqhk.co/vamosopon/haPjeMD/download_souzasim_drag_race_mod_apk_data.pdfIn PDF document text
    • http://itrom.fun/1045844321868sbb.pdfIn PDF document text
    • http://kopumiwabetare.66ghz.com/bodanalerowefakoxew.pdfIn PDF document text
    • https://cdn.sqhk.co/bunewonu/icgjEig/liverpool_phone_wallpaper_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/tuwagezo/gf42hdV/sustainability_report_pertamina_2015.pdfIn PDF document text
    • https://cdn.sqhk.co/mitugejaxel/eMibii3/62942305015.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418783/normal_5fd2c4e2c83ba.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484804/normal_5feb0bd22ee90.pdfIn PDF document text
    • https://cdn.sqhk.co/barugogip/jh2iiih/temple_lost_snow_escape_walkthrough.pdfIn PDF document text
    • http://megantv.site/7447494461vfp6a.pdfIn PDF document text
    • https://cdn.sqhk.co/xusarukave/vgfhbid/trending_videos_2020_in_kenya.pdfIn PDF document text
    • http://peskomment.ru/resnick_halliday_physics_solution4zmhi.pdfIn PDF document text
    • http://luminar4-download.xyz/54039317115hkqdz.pdfIn PDF document text
    • http://bazis-rostov.com/66667561446z3muu.pdfIn PDF document text
    • http://gikiwasixe.66ghz.com/50023105977.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385636/normal_5fd0f4b21e66c.pdfIn PDF document text
    • https://cdn.sqhk.co/zuboxizip/iaT1agc/bully_apk_netblog.pdfIn PDF document text
    • http://vujilob.22web.org/renaissance_periodization_male_physique_template.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417658/normal_60009648d56e1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/desekusoxi/mofibobinakil.pdfIn PDF document text
    • https://s3.amazonaws.com/xupovobejanam/believe_in_yourself_ziggy_marley_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/mikibetiv/ganpati_atharvashirsha_in_marathi_lyrics.pdfIn PDF document text
    • https://s3.amazonaws.com/fakuguvil/9995768597.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
    • 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_off0000e694.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE694 5016 bytes
SHA-256: 893b00c77ab9b2e4efe6596e9da3e14eb340b3a03dde204cd460fedd9a748c67
font_01_sfnt_off0000f779.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF779 4120 bytes
SHA-256: af556f1482f2fb8c782b6e32d8ac17c44cebea2e8ba53c62e2350a0780b41459
font_02_sfnt_off00010269.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10269 11428 bytes
SHA-256: 960b4815efe2bbe900223a690a49335abef2068df0ec2c9217c33baf4760528c
font_03_sfnt_off000129a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129A3 16036 bytes
SHA-256: 9559dd1bd908241551916101fda3d445a26f5c4b506a1423f23393456f9d5940

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