Malicious PDF — malware analysis report

Static analysis result for SHA-256 00f580398401f20f…

MALICIOUS

PDF

52.5 KB Created: 2020-08-20 07:48:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8614e574cc173107196fb20c1f7a755b SHA-1: 616aa66988165b0b34f9e4e02ba6a60974f96ce2 SHA-256: 00f580398401f20fe39bf372654da19a47bd08fc9dec64071a1cc3d1f3891af2
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link to a known malicious redirector, ttraff.cc, which is likely used to obscure the final destination of the malicious payload. The document body and embedded links suggest a social engineering lure related to 'Bovingdon academy uniform' to entice users to click the malicious link. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.
  • 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.cc/pify?keyword=bovingdon+academy+uniform
    • http://files.coastal-curators.com/uploads/1/3/0/7/130739238/zalikapudu_xinowodopi_vobulinupa_gulem.pdf
    • http://files.manifestedvisionsnlr.com/uploads/1/3/1/3/131379343/retubusiru_sikezujiz_pojonojo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/5234/2184/files/congenital_heart_disease_in_pregnancy.pdf
    • https://cdn.shopify.com/s/files/1/0432/7686/1606/files/58343836769.pdf
    • https://cdn.shopify.com/s/files/1/0428/4016/2470/files/zuxitut.pdf
    • https://cdn.shopify.com/s/files/1/0440/9229/3272/files/zufegipudiwilebeti.pdf
    • https://cdn.shopify.com/s/files/1/0438/1261/8402/files/bazaar_app_free.pdf
    • https://cdn.shopify.com/s/files/1/0435/9671/0050/files/dobiwasunije.pdf
    • https://cdn.shopify.com/s/files/1/0430/8706/9348/files/65375509140.pdf
    • https://cdn.shopify.com/s/files/1/0435/2222/8376/files/46246350240.pdf
    • https://cdn.shopify.com/s/files/1/0439/4670/5051/files/understanding_breast_biopsy_pathology_report.pdf
    • https://cdn.shopify.com/s/files/1/0433/1339/7913/files/sivuzilanurelejemiz.pdf
    • https://cdn.shopify.com/s/files/1/0432/2990/5058/files/jubewejazulifazap.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000079a1.bin
18aeb390b9d8c997c85990031584c8f46f11a0aaa3f04529ac5b593db723a6d3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79A1 5340 bytes
font_01_sfnt_off00008bc3.bin
d118fb30a5f588416fb536c8370fb377cc842a4ea5b0b0bd0c9542e551812826		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8BC3 10396 bytes
font_02_sfnt_off0000af7b.bin
c691c2dc236ff1c3149f8178f30dcb30456d959af2bd230901b395ad55359d31		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAF7B 16208 bytes

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