Malicious PDF — malware analysis report

Static analysis result for SHA-256 c182e2829d018cd6…

MALICIOUS

PDF

34.8 KB Created: 2020-08-23 00:48:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 98b69d7396a18668a840e1b384075bc4 SHA-1: f456b72c3086ae32a7c9887b5cb38efbb42b2d3e SHA-256: c182e2829d018cd6c06401601761b51a722d91294a77b4127919673061a834d5
150 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating it points to known malicious redirector infrastructure. The document body itself is largely obfuscated but contains a URL that matches the redirector. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm or SEO manipulation tactic, potentially to obscure malicious destinations. No scripts were extracted, limiting the analysis of direct payload delivery mechanisms.

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.
  • 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.
  • 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=lagu+nusa+dan+rara+bulan+hijriyah
    • http://sufub.katarinaclairecorner.com/uploads/1/3/1/3/131383791/susupad.pdf
    • http://files.losalamitosunit716.org/uploads/1/3/2/6/132683135/pigaxuvamilesat.pdf
    • http://files.kristinahooverfineart.com/uploads/1/3/1/4/131454699/dowoxaw.pdf
    • https://cdn.shopify.com/s/files/1/0431/2072/2080/files/nezefaludibomubomigip.pdf
    • https://cdn.shopify.com/s/files/1/0433/1569/1675/files/bloomsbury_group.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wudivilijekeroleve.pdf
    • https://cdn.shopify.com/s/files/1/0432/9832/4640/files/botswana_tourism_organisation.pdf
    • https://cdn.shopify.com/s/files/1/0429/2627/6775/files/guidelines_for_colonoscopy_2018.pdf
    • https://cdn.shopify.com/s/files/1/0432/7335/5419/files/daguzo.pdf
    • https://cdn.shopify.com/s/files/1/0438/3670/2870/files/xadetarojoj.pdf
    • https://cdn.shopify.com/s/files/1/0437/7539/3946/files/rahul_jain_tu_aashiqui_video_song.pdf
    • https://cdn.shopify.com/s/files/1/0431/4693/6482/files/robureziwobe.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/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000040d0.bin
8f9b27760da4249b785e08836cac06b25ef90931ff1422480c38f610c64ea082		 pdf-font-stream PDF embedded font (sfnt) at offset 0x40D0 4920 bytes
font_01_sfnt_off00005168.bin
3416107fd409761bb00f2b08548ee1a936904bb3563a746dcb0fbcfe4ce870cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5168 9144 bytes
font_02_sfnt_off000070b3.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70B3 4324 bytes

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