Malicious PDF — malware analysis report

Static analysis result for SHA-256 3523f428b152fbbe…

MALICIOUS

PDF

41.0 KB Created: 2020-10-28 09:40:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 429cd347e77774cb5fb190607264585b SHA-1: 25bb42ab0cadeb61e91f4b0c14a074bb2da1e41e SHA-256: 3523f428b152fbbee05330f8c539cfdf8cd81065b3af2480a61d72e9c5e93f65
94 Risk Score

Malware Insights

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

The PDF file contains a link to a redirector service, which is flagged as malicious. The document body, though heavily obfuscated, contains text related to 'Playstation remote apk download' and the malicious URL. This suggests a social engineering attempt to trick the user into downloading a malicious application. No scripts were extracted, but the presence of a malicious redirector is a strong indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://ttraff.me/pify?keyword=playstation+remote+apk+download In PDF document text
    • https://cdn-cms.f-static.net/uploads/4421780/normal_5f98a835d6ca5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368949/normal_5f89543a23ed5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374963/normal_5f8aae934bdb8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379222/normal_5f8c94ba067da.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367297/normal_5f873bd7c11f2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365621/normal_5f8e53385630b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369486/normal_5f8893e9d856a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374022/normal_5f989d179eec3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/bernice_bobs_her_hair.pdfIn PDF document text
    • https://s3.amazonaws.com/pasawexawinogad/international_accounting_standards_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/arbitration_law_in_pakistan.pdfIn PDF document text
    • https://s3.amazonaws.com/bizamesuwepe/acceptance_sampling_definition.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/os_fisiocratas.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/alessandra_rampolla_libros_gratis.pdfIn PDF document text
    • https://s3.amazonaws.com/retisovojor/tufezabilikuxig.pdfIn PDF document text
    • https://s3.amazonaws.com/suxiweke/winnie_the_pooh_ebook.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a176e30c-740f-426e-a0c4-8c03192ea752/setaf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d67b420-043c-464c-9032-a6137a059bb1/zodaliwolagamubafijexetik.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae94a2c6-5a51-4ab9-88ea-d1957c11a071/2254388106.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/54e31090-348d-42c9-9c53-2dd33d565d04/vasuwe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ecb4b0c-2cb0-47e1-b391-38aced8c79aa/jonefemenugivep.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_off00005dd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DD9 5364 bytes
SHA-256: 4f5d2d299b00d6fff970517453db741c7fcc75c6b0bacfdc0b48a06f3b5bdfcb
font_01_sfnt_off00007013.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7013 11604 bytes
SHA-256: b587d26f052650cd6c72e458481212b48215206ceede14dabd9459a8b3e60f09

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