Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f9a0700f188ec37…

MALICIOUS

PDF

61.7 KB Created: 2020-11-08 20:08:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-15
MD5: 024efc394beff111c49a6fa02d73505d SHA-1: 024334e1cb2873c457d66f35fbe303bf2f0dbc16 SHA-256: 9f9a0700f188ec37b943cc53b8180cb7207610455bf943611ce82468e3415d7b
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://traffset.ru/aws?keyword=pal+stewie+references PDF link annotation
    • https://vogaxuruxav.weebly.com/uploads/1/3/4/3/134352923/tilasaku_goduzuramodapa_foxiwezisixogef.pdfIn PDF document text
    • https://sujofunipus.weebly.com/uploads/1/3/4/5/134502209/bewud-niwixojum-ziseterozefe.pdfIn PDF document text
    • https://garegijewavib.weebly.com/uploads/1/3/4/3/134389285/nasexekuxilodob-mimuv.pdfIn PDF document text
    • https://winapusumebut.weebly.com/uploads/1/3/4/6/134695108/fawori-tufedupa-noxopikevajose-xunixarenegodoj.pdfIn PDF document text
    • https://gujibimusexuwub.weebly.com/uploads/1/3/4/0/134042380/nibogura-lomed-fudomilas-teludovov.pdfIn PDF document text
    • https://sexanugujox.weebly.com/uploads/1/3/4/2/134266496/9dd14bb203.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366993/normal_5f98cf15643fc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f46dedc-f455-4d55-91ae-7a5ac69edb83/54958954497.pdfIn PDF document text
    • https://s3.amazonaws.com/gitipelut/29796578300.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/930d6b12-658a-43f0-aca9-0b27e17d04a4/30449848069.pdfIn PDF document text
    • https://s3.amazonaws.com/mitakajazum/88766717225.pdfIn PDF document text
    • https://s3.amazonaws.com/mipizaju/28369032141.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off0000bd81.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xBD81 24608 bytes
SHA-256: c3ae534623aecfd4770ecc9ab9673ffc702affc95f5de30efe2524d646ae0411
font_00_sfnt_off000087ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87AB 4968 bytes
SHA-256: 24eec171584a0187442be8b3bb6ecf59e283248ecd0db2704260c227652dfb20
font_01_sfnt_off000098b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98B2 10700 bytes
SHA-256: a652751e7503bd15a65f4a051cb182cd7816ae9b2f697e6aeb13280c4fb0662b

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