Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba3a7db91b97ca4b…

MALICIOUS

PDF

76.7 KB Created: 2021-03-23 20:01:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: cfb1aeb5171842acb04f4abf63459959 SHA-1: 7d5ac196b636fecbf5ae49f8d311ff490fe30275 SHA-256: ba3a7db91b97ca4bddd5c35d1caab9a016bf0c88fdd773514d15ec3634008a07
126 Risk Score

Malware Insights

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

The PDF file contains embedded URLs and heuristics indicating it is a link farm designed to redirect users to malicious sites. The document body, though heavily obfuscated, suggests a lure related to 'Kenmore dishwasher power cord installation'. The presence of multiple external URIs and a high ML classifier score strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://nipisod.ru/strik?utm_term=kenmore+dishwasher+power+cord+installation PDF link annotation
    • http://stavki.link/wineralemimewejefaxil8l1iy.pdfIn PDF document text
    • https://cdn.sqhk.co/wedowetaso/cVcjfIk/51047805644.pdfIn PDF document text
    • http://papawugamajube.mygamesonline.org/book_of_legends_sefer_ha_aggadah.pdfIn PDF document text
    • http://damvglaz1.xyz/73234466210smt91.pdfIn PDF document text
    • http://hangookoil.ru/vorijadigasuwzrcok.pdfIn PDF document text
    • https://cdn.sqhk.co/kigimole/AkjdZ8V/aces_of_the_luftwaffe_ps4_metacritic.pdfIn PDF document text
    • http://gikodarekegov.mywebcommunity.org/74611592636.pdfIn PDF document text
    • http://momarivido.mypressonline.com/old_mr._boston_deluxe_official_bartender_s_guide.pdfIn PDF document text
    • http://idealica-ufficialeitalia.website/deadpool_game_for_pc_apunkagames03hld.pdfIn PDF document text
    • https://cdn.sqhk.co/vulovosovem/bZ1kid7/redisen.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://a694a867-b0fa-45cd-b082-7f9abf80b1a7.filesusr.com/ugd/430cb2_252e6c2e0b04448599e5c342769a1f7a.pdf?index=trueIn PDF document text
    • https://0df6220b-9630-4647-aab6-0d9db69b9d59.filesusr.com/ugd/8b97dd_c1ae1fb8ceb24bac9734ac6e7b11b358.pdf?index=trueIn PDF document text
    • https://0c2a7d7b-be9d-4ef2-a94c-09ca905cc17d.filesusr.com/ugd/7d21c0_88f8d8a6adcd4362b41a0752e77bf5b4.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/juzewojavomofew/28059036179.pdfIn PDF document text
    • https://s3.amazonaws.com/zibenoroduzuw/what_is_another_word_for_sensitive.pdfIn PDF document text
    • https://61090d85-22e6-4724-b969-52a17785150c.filesusr.com/ugd/952c2e_15d62c2a1f574e65852d89af97b0300b.pdf?index=trueIn PDF document text
    • https://229c0a76-8cd2-4a6d-ad64-a548a1436bbb.filesusr.com/ugd/f9ed01_ad98758896ea4f1496f12aaa3ceb82eb.pdf?index=trueIn PDF document text
    • https://cb8582fb-ab29-4f13-bfd4-623ca244ab52.filesusr.com/ugd/d61b30_c63e8f54bdce4b60b066173beceed042.pdf?index=trueIn 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_off0000e352.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE352 5164 bytes
SHA-256: afe7d1cd6bdaef3af2b36301edead7805e07f164f49dbd2a099aba5ec81abf80
font_01_sfnt_off0000f4c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4C4 10200 bytes
SHA-256: 5fe23d8f78c88475485507619e19a559d73475ea61080a6b46063a3d666f18f5
font_02_sfnt_off000117a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117A7 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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