Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac398332ca9cb377…

MALICIOUS

PDF

124.7 KB Created: 2021-03-15 05:35:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 231a2193d61d7c03ce33a124fc2ba4e5 SHA-1: d9ba5c55d2b59b31af6ade6093b72e367e75e168 SHA-256: ac398332ca9cb377f4370196b656dab43882d8a64912e3134a9ebfda3a3542ae
66 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, many of which point to disposable domains and are likely intended to redirect users to malicious content or phishing sites. The ML classifier strongly indicated maliciousness, and the presence of multiple external URIs suggests an attempt to lead the user away from the current document. No scripts were extracted, but the overall structure and URL distribution are indicative of a link-farming or redirection-based attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://botokaw.ru/123?utm_term=kshatriya+full+movie PDF link annotation
    • http://mevukavotidu.getenjoyment.net/geruwujewefebiju.pdfIn PDF document text
    • http://xejopegig.mypressonline.com/78583131872.pdfIn PDF document text
    • https://cdn.sqhk.co/wezopexa/BsY9Uhj/gravitational_force_worksheet_grade_5.pdfIn PDF document text
    • https://cdn.sqhk.co/puzadowoke/iThh3hi/vanovumuwuxofawigaj.pdfIn PDF document text
    • http://pogawubujogeje.mypressonline.com/basic_logo_design_cost_in_india.pdfIn PDF document text
    • http://retapadu.medianewsonline.com/antonio_gramsci_espaol.pdfIn PDF document text
    • http://mumijivamivaxij.medianewsonline.com/mijumifokipanejozufiwokix.pdfIn PDF document text
    • https://cdn.sqhk.co/gonolesuzam/ijd9jiK/57383681406.pdfIn PDF document text
    • http://zitokujamu.mypressonline.com/how_to_crochet_a_baby_boy_cap.pdfIn PDF document text
    • https://cdn.sqhk.co/namemedoxake/nghGDgg/37019866918.pdfIn PDF document text
    • http://fetoxuk.mywebcommunity.org/83650013001.pdfIn PDF document text
    • https://cdn.sqhk.co/busumodofu/jhjc0je/93298853439.pdfIn PDF document text
    • http://gukabibus.mygamesonline.org/73640157777.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ralirajuz.atwebpages.com/phonetic_alphabet_usa.pdfIn PDF document text
    • http://zuxakenupe.epizy.com/lakshmi_narasimha_naa_songs_ing.pdfIn PDF document text
    • https://76bf09fe-c378-4d6f-baa9-beaf48595a8b.filesusr.com/ugd/61567a_e5213da928d04b6b89ebc1c4924f6ea6.pdf?index=trueIn PDF document text
    • https://6cbe2f5c-748b-4bc6-b691-25a968a47885.filesusr.com/ugd/d6b5da_6ab03584adce4d348c24b2bff8ad7882.pdf?index=trueIn PDF document text
    • http://ratimoli.epizy.com/najiwimofogevafe.pdfIn PDF document text
    • http://xaduwefel.rf.gd/sanenufi.pdfIn PDF document text
    • http://gidubabe.myartsonline.com/online_acrobat_reader_to_converter.pdfIn PDF document text
    • http://lirufuti.epizy.com/janifalidiketazemajit.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_off00017114.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17114 9848 bytes
SHA-256: 3804269ae89834a001eba8fb8ed54f44933db436ff2d425eb645fbe6476eee1f
font_01_sfnt_off000191df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x191DF 5136 bytes
SHA-256: 7be5d1528961c84a3315e8c5774b51d45f5c2feefc6f77a83e42fc6fc93c2612
font_02_sfnt_off0001a344.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A344 12556 bytes
SHA-256: ed2f2b99119bf7589c21c4faf0c6589433a0dfb751cb4a1abe57cc1c4d9e22c4
font_03_sfnt_off0001cd38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1CD38 16148 bytes
SHA-256: 49436f94d5abf10ca6af8af9848174aab82dfe7bc58a5146411d238fd5c76648

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