Malicious PDF — malware analysis report

Static analysis result for SHA-256 94805efdc23f1b03…

MALICIOUS

PDF

77.5 KB Created: 2021-05-06 23:25:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 8a9cee323befd3e92bc9cbd3e1f096ae SHA-1: ee866b2471939f7d04e0627b84f04ebeb90529d4 SHA-256: 94805efdc23f1b0375ac35370d358ffe0eb2d3932b7b2c5075ede30fe93cbe8b
126 Risk Score

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 0.9998

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://crophysi.ru/strik?utm_term=paintball+near+me+birthday+party PDF link annotation
    • http://com-connexion.xyz/android_secret_codes_20198a8co.pdfIn PDF document text
    • http://thehensleys.org/sonobovoxudipaxusirevaseku7ad.pdfIn PDF document text
    • http://dkblogin-de.com/division_worksheets_for_7th_gradexa33i.pdfIn PDF document text
    • https://cdn.sqhk.co/savageven/jihA200/jekixuzuji.pdfIn PDF document text
    • http://allostar.buzz/north_face_women_s_jacket_size_guideengs5.pdfIn PDF document text
    • http://rusadezebep.mygamesonline.org/molenujegigafixavebe.pdfIn PDF document text
    • http://bonus332.site/didasexituxi9z4eo.pdfIn PDF document text
    • https://cdn.sqhk.co/fuvivemu/7lhbgdB/amazon_kindle_paperwhite_2020_rumors.pdfIn PDF document text
    • http://mon-cmb.best/rodojapohfq6j.pdfIn PDF document text
    • https://cdn.sqhk.co/vixuzemabad/i72ejbK/88876870572.pdfIn PDF document text
    • http://sozapemogoz.mygamesonline.org/wozig.pdfIn PDF document text
    • http://zawugudumi.getenjoyment.net/angular_velocity_problems.pdfIn PDF document text
    • https://cdn.sqhk.co/fegukajebaj/IjhaUjb/21381749536.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://b962d5b8-8819-42e3-9ba3-d95e8366760e.filesusr.com/ugd/f51585_bfe2eb0c286f45d0826a5a3d3c855dd1.pdf?index=trueIn PDF document text
    • http://ravuwuvilusu.epizy.com/hoover_powerdash_pet_carpet_cleaner_fh50700_attachments.pdfIn PDF document text
    • https://20996a60-9695-4f45-8fdb-44bdc783da55.filesusr.com/ugd/c57cae_1e01b10c81fb4060b1a2b9ca997b6451.pdf?index=trueIn PDF document text
    • https://e26976e3-f089-44cc-a2a6-54bcc6cae308.filesusr.com/ugd/0df15e_d914118df1824611805a8016a7e3b45d.pdf?index=trueIn PDF document text
    • http://badabosijok.rf.gd/52751099195.pdfIn PDF document text
    • https://b19b3b79-9ae2-4e99-9b16-ef32671d60f4.filesusr.com/ugd/0bc867_98c41c62ac624a8084645a32ddb1774f.pdf?index=trueIn PDF document text
    • http://faleferesevo.onlinewebshop.net/bumibunosejose.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_off0000efc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFC6 5264 bytes
SHA-256: b2aa188d1ae3bc683c56c06259f9adbef16eb0d8e5853a5d1c0d1afa72af5779
font_01_sfnt_off0001017b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1017B 11504 bytes
SHA-256: 16655e3b65320cae80b4034d21427ece1b1c1a19f3bef037b560df47b400eec9

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