Malicious PDF — malware analysis report

Static analysis result for SHA-256 49ac8488f2894615…

MALICIOUS

PDF

46.9 KB Created: 2020-07-26 05:38:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 143d1b8d3c4ce9ecc922d5f4e9d3187a SHA-1: 82f391ca970512cba96cf16dd15b1dd99cd2dfe5 SHA-256: 49ac8488f289461589b296ca9ec7d94b9b920281bb08bd444015fa41c5911878
152 Risk Score

Malware Insights

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

The PDF contains a prominent link that redirects to a known malicious domain, ttraff.com, with a query parameter suggesting a 'cell phone tracker application' lure. The PDF also hosts a large number of external links, many pointing to shopify.com, likely as part of a link farm to improve search engine ranking for malicious content. The ML classifier strongly flagged this PDF as malicious.

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=cell+phone+tracker+application
    • http://files.computerscienceresources.net/uploads/1/3/0/8/130814411/sexijefejak.pdf
    • http://files.pubpronetworkconference.com/uploads/1/3/2/6/132682235/2955a0a.pdf
    • http://files.daniellesimmonsphotography.com/uploads/1/3/0/8/130813710/zesetudopofatoj_bonoz_petukedup_pileniwepav.pdf
    • http://files.santiagolopezphoto.com/uploads/1/3/1/6/131606271/e3af7e7a3.pdf
    • https://cdn.shopify.com/s/files/1/0433/9276/2017/files/13038564419.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/65587220918.pdf
    • https://cdn.shopify.com/s/files/1/0429/5802/8959/files/75700830239.pdf
    • https://cdn.shopify.com/s/files/1/0432/7954/8580/files/pefasixeju.pdf
    • https://cdn.shopify.com/s/files/1/0437/2037/6474/files/5818161120.pdf
    • https://cdn.shopify.com/s/files/1/0432/0821/2638/files/28145403977.pdf
    • https://cdn.shopify.com/s/files/1/0433/6202/5624/files/gixofowopu.pdf
    • https://cdn.shopify.com/s/files/1/0429/5737/3589/files/vivawaxikesetu.pdf
    • https://cdn.shopify.com/s/files/1/0431/8163/7794/files/9660688763.pdf
    • https://cdn.shopify.com/s/files/1/0428/0025/1036/files/43375593616.pdf
    • https://cdn.shopify.com/s/files/1/0430/5652/9565/files/85642964709.pdf
    • https://cdn.shopify.com/s/files/1/0439/9972/3678/files/zujiwubojaromiwu.pdf
    • https://cdn.shopify.com/s/files/1/0428/4396/3548/files/pusudomopaxuw.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/
    • https://cdn.shopify.com/s/fi

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007b97.bin
5ea31c666300d154b549660150f903a2504d6fe13193d3c8c0c88b5ced7f08d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B97 4716 bytes
font_01_sfnt_off00008b88.bin
156cd42ba06041f04c487fab33821d75ea8355555d2ab04ee4e04e156d58cfe1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B88 10156 bytes

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