Malicious PDF — malware analysis report

Static analysis result for SHA-256 0700c2b0839653e8…

MALICIOUS

PDF

64.3 KB Created: 2020-08-22 02:38:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f0a2502f93f7ba604acf5581b8c8a023 SHA-1: 1eceacdee38ea2cc492e1fef526c5e4914deb447 SHA-256: 0700c2b0839653e85eb435861706b4779e7ed0256b1eceb1d3a3a138a4862740
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to a link farm designed to redirect users. The primary malicious URL identified is https://ttraff.com/pify?keyword=bmp+adalah+pdf, which is flagged as a malicious redirector. The document body and embedded artifacts do not provide further actionable intelligence beyond the presence of these links.

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.com/pify?keyword=bmp+adalah+pdf
    • http://files.skyridgevolleyball.com/uploads/1/3/2/8/132814476/ab18d.pdf
    • http://jekakif.northbrightonrecording.co.uk/uploads/1/3/1/4/131437657/xedalemivaka-luloxexonor-zujabefen-zifuwesekunul.pdf
    • http://files.gigilynfineart.com/uploads/1/3/2/6/132695302/2537638.pdf
    • http://vibolivo.shawnforever.com/uploads/1/3/0/7/130738524/didizivenefiba.pdf
    • http://zamematir.tintawitaelderliving.com/uploads/1/3/0/8/130874038/8938673.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/8158/7093/files/gutuzoxixanugakabixoda.pdf
    • https://cdn.shopify.com/s/files/1/0433/3862/9275/files/cicloalcanos_definicion.pdf
    • https://cdn.shopify.com/s/files/1/0437/7945/7173/files/9505222173.pdf
    • https://cdn.shopify.com/s/files/1/0437/0425/4615/files/fujodaru.pdf
    • https://cdn.shopify.com/s/files/1/0431/5804/4826/files/fabogebegaxasavaxeza.pdf
    • https://cdn.shopify.com/s/files/1/0431/0351/8882/files/98981387642.pdf
    • https://cdn.shopify.com/s/files/1/0443/3159/7980/files/25661439157.pdf
    • https://cdn.shopify.com/s/files/1/0433/1284/0862/files/13637212467.pdf
    • https://cdn.shopify.com/s/files/1/0432/7240/5157/files/80058432055.pdf
    • https://cdn.shopify.com/s/files/1/0434/6868/5464/files/56953496756.pdf
    • https://cdn.shopify.com/s/files/1/0432/9875/0629/files/gaxapilunapigurerup.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_off0000a8c8.bin
f613f0701be71e6fbacecabd3694e2027b2d1144412d09da4a4b47959adf20cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA8C8 5056 bytes
font_01_sfnt_off0000b9df.bin
f300e8dc1061a862196315f052dd8e45284b268907cf95ed4bec8d65f3369cfc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB9DF 10748 bytes
font_02_sfnt_off0000dec4.bin
97c2cf6a957d68af886eb9420dbf9e11661659d83379070f8c1f6c41654e997f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDEC4 16208 bytes

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