Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a1fec918caa8c48…

MALICIOUS

PDF

53.6 KB Created: 2020-08-05 05:47:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1507fdf3094fb50ac326a1ba2a944d65 SHA-1: 5f8136312d7990ae41ab80aa38d1fc963ca25ba5 SHA-256: 2a1fec918caa8c482f0b0455c689cde1d0f5d8abe8bc658aabb0f174f9347ddf
152 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is designed to lead users to malicious content. The document body, though heavily obfuscated, contains the same URL and appears to be a lure related to 'best books on leadership and management pdf'. The presence of numerous Shopify links suggests an attempt to blend in with legitimate content, but the critical heuristic firing on the redirector is the primary indicator of malicious intent. No scripts were extracted, limiting the analysis of further payload delivery.

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=best+books+on+leadership+and+management+pdf
    • http://files.shop.dannysrods.com/uploads/1/3/1/3/131398008/309a0e485ea9.pdf
    • http://files.catskillanimalrescue.net/uploads/1/3/1/8/131872273/3578303.pdf
    • http://files.contractordepotplus.com/uploads/1/3/1/8/131856713/nadabi_bafopipes_neladulijalom_pobivute.pdf
    • http://files.zportman.com/uploads/1/3/0/7/130775758/kinegezi.pdf
    • http://files.carloshoyt.com/uploads/1/3/1/4/131408369/606ec1573.pdf
    • https://cdn.shopify.com/s/files/1/0428/0628/0355/files/43890688769.pdf
    • https://cdn.shopify.com/s/files/1/0434/1504/4245/files/kojudelubiwuzuguwi.pdf
    • https://cdn.shopify.com/s/files/1/0428/7250/4483/files/68909520360.pdf
    • https://cdn.shopify.com/s/files/1/0434/5266/1912/files/98654774375.pdf
    • https://cdn.shopify.com/s/files/1/0441/0766/1464/files/makkar_ielts_speaking_file.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fadanamimurusekebunom.pdf
    • https://cdn.shopify.com/s/files/1/0429/9603/9839/files/80009404699.pdf
    • https://cdn.shopify.com/s/files/1/0431/1718/3130/files/fitivixodilexomezawi.pdf
    • https://cdn.shopify.com/s/files/1/0434/0105/2321/files/piwuwevotuzolola.pdf
    • https://cdn.shopify.com/s/files/1/0438/3657/1805/files/samsung_side_by_side_refrigerator_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/2607/8106/files/5791364836.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009317.bin
99c7f6dece224b441551c5cc14e3930c5145e0c0510e65ec0837ac62f52c1d21		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9317 5708 bytes
font_01_sfnt_off0000a656.bin
d6d670d375a470f45ecf6c13888390b1038f797d001132926f41b081b5ab9ee6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA656 10320 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.