Malicious PDF — malware analysis report

Static analysis result for SHA-256 f61801a596e73826…

MALICIOUS

PDF

40.9 KB Created: 2020-10-15 11:16:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 2e80bd5a19b04cb1a634d5e54375a493 SHA-1: 64e1ec1520d82d244baaa3ed39ea13f0a28294a3 SHA-256: f61801a596e7382625cc2afefe397fa886e952699f9693a2e4689693161a9838
94 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, which is designed to trick users into downloading potentially harmful software. The embedded URL is disguised as a 'Google installer apk download for android', indicating a social engineering lure. The ML classifier also strongly flagged this PDF as malicious.

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://gettraff.ru/123?keyword=google+installer+apk+download+for+android In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365646/normal_5f871bb4eb12f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366369/normal_5f87f04996b23.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367296/normal_5f879014444dd.pdfIn PDF document text
    • https://dagigokes.weebly.com/uploads/1/3/0/7/130739756/pusonux.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/bosilo_ginasesif.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/e9297741-4e77-48f1-a56c-898a184c1948/vugasiz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/acad5102-1d6e-4adf-b048-9fdae5c3148b/zumagow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/7524/2657/files/french_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/8368/6588/files/riwewopakezokakoxule.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7016/7966/files/ann_arbor_craigslist_pets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/8181/3156/files/ranabukuzunewi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1905/9868/files/las_ciudades_invisibles_epub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0843/2040/files/docs_viewer_pro_apk_cracked.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/65971809-8678-4151-af86-617463af28de/74601800986.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2efe631d-f037-4aa2-9e56-c37736a4a06e/diwevutixegamabujak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0cc00f8d-35cc-481c-8623-c706a66591a6/38010193786.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5dcdc78e-8de0-49ce-86ae-e056a8203e21/lemesajuvomogile.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_off0000600c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x600C 5396 bytes
SHA-256: f97ade46be0a8d56a948d184b4eb19d5f5153fd7ac864da859d665ee50468b11
font_01_sfnt_off00007294.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7294 10652 bytes
SHA-256: 548bc024d5b0b35f4e841e88eb5a4be0e0719eae005b05a17934f8baf79f5098

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