Malicious PDF — malware analysis report

Static analysis result for SHA-256 03b8154de81fce0e…

MALICIOUS

PDF

77.9 KB Created: 2021-03-14 11:16:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 71615e308137aa42de0b6fd805327f97 SHA-1: 17ed12ecba8c21434c49f7971c60f3e0f874b665 SHA-256: 03b8154de81fce0ec3da44781be294d9853f78bf53de071b6cfdaf0f2423d529
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 0.9997

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://druttle.ru/wix?keyword=dell+inspiron+15+rp1f7 PDF link annotation
    • https://cdn.sqhk.co/zimopaji/j6iflo3/52218090285.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489045/normal_6045d6c1afd00.pdfIn PDF document text
    • http://dedevolopi.iblogger.org/video_er_website.pdfIn PDF document text
    • https://cdn.sqhk.co/lilaxikixo/heXthit/nova_launcher_app_drawer_icon_missing.pdfIn PDF document text
    • https://cdn.sqhk.co/jiluputumusi/Va6ijhf/64283159531.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445737/normal_602af59b81a3e.pdfIn PDF document text
    • https://cdn.sqhk.co/roxigeve/2hjhgia/86203363759.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378852/normal_5ff829fc34471.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413231/normal_5fd91bbc1c757.pdfIn PDF document text
    • https://cdn.sqhk.co/lafixafif/eGlgdMq/70054795456.pdfIn PDF document text
    • http://vufarizuluf.22web.org/93481170868.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lesadesar.rf.gd/star_wars_rpg_collapse_of_the_republic_download.pdfIn PDF document text
    • http://nidexirubazo.rf.gd/edtpa_social_studies_handbook_2019.pdfIn PDF document text
    • http://wuparol.epizy.com/73544695956.pdfIn PDF document text
    • http://jefokid.rf.gd/read_theory_analogies_3_level_7_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7345c0ae-0ced-4d10-b2c8-8375c5798abf/mous_iphone_11_pro_max_case_australia.pdfIn PDF document text
    • http://rasijubesu.epizy.com/chinese_vampire_movies_in_tamil.pdfIn PDF document text
    • http://bitezopunofiwu.rf.gd/jeralizapikajiwajus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88ec8db2-01c8-478d-b2f9-6ae74170f409/kijotiburigimeperopuda.pdfIn PDF document text
    • http://kiwozoma.epizy.com/block_sites_from_google_search_android.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dd4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD4F 4940 bytes
SHA-256: 0f5b9cffc5ba07384ac2fbceb21693b6c17d87b85879e5842c1d07dbc9bfc5a3
font_01_sfnt_off0000ee46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE46 12028 bytes
SHA-256: b10970ac6775e19f1c4dea3a06c40468b9cec593e8e6ac477f71bba50c1d2786
font_02_sfnt_off00011586.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11586 16060 bytes
SHA-256: 2173a1880e9f774f759393e7d0d28dda91d04d8a3eae6bea41b822770b343b90

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