Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2b7e5652b701302…

MALICIOUS

PDF

78.1 KB Created: 2021-02-25 02:35:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 10c27e7ddff4beced8a5a09919611cd9 SHA-1: d967efa42d8d07f30a7724f7e74d17f5983d4da0 SHA-256: f2b7e5652b701302e72ab9257dd6d7c7b5794e0e94d8e7ca8e8e2b32a39b17c7
66 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by 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 4

  • 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://leonvi.ru/strik?utm_term=technical+analysis+and+stock+market+profits PDF link annotation
    • https://cdn.sqhk.co/rozopebak/jmDhOhb/vulugeka.pdfIn PDF document text
    • http://iglivesupportteam.com/36026188409x1x2b.pdfIn PDF document text
    • http://latencfsrt.space/mireragobukonigomr92o.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403807/normal_5ff56771c0d30.pdfIn PDF document text
    • http://idealica-italy.site/34460998826zuw4p.pdfIn PDF document text
    • http://idealica-italiauficiale.website/finding_perimeter_worksheets_3rd_grade3jhw6.pdfIn PDF document text
    • http://ezfix.asia/arab_times_onlinecw3c5.pdfIn PDF document text
    • http://forpost-electrica.ru/46608135319qkw3b.pdfIn PDF document text
    • http://storeeu.info/raresesebesegakapumidenu9mjk.pdfIn PDF document text
    • http://mkuu.club/40235850341t7f85.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376101/normal_601ae060e71ad.pdfIn PDF document text
    • http://pedron.fun/fegaselexarikekidozd6.pdfIn PDF document text
    • http://romeital.space/rogativamilokaxodax7zqnk.pdfIn PDF document text
    • https://cdn.sqhk.co/mobirewin/jnIZkbG/race._io_mod_apk_unlimited_money.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kapirexazi.onlinewebshop.net/60022268269.pdfIn PDF document text
    • http://saxodanokijaj.atwebpages.com/horton_hears_a_who_full_movie_in_hindi_dubbed_watch_online.pdfIn PDF document text
    • https://s3.amazonaws.com/nafibanefexex/lopenomigewamejop.pdfIn PDF document text
    • https://s3.amazonaws.com/tojabixefova/bepegavorexozovo.pdfIn PDF document text
    • http://tiluxusimutine.atwebpages.com/67435193848.pdfIn PDF document text
    • http://pabewuvuxaf.onlinewebshop.net/jewotobokumesurezupis.pdfIn PDF document text
    • https://s3.amazonaws.com/goviwigax/meditation_benefits.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f2e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2E7 5512 bytes
SHA-256: e9a0d2eab409cb3ec24e1ad2d49e1c9cf3c5e0760c9d9805be963791c2b2fa08
font_01_sfnt_off00010585.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10585 10812 bytes
SHA-256: 70e7d3005f4011354c64306dab46afedfbeb06cbb911d8d1eb007df5be2eda60

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