Malicious PDF — malware analysis report

Static analysis result for SHA-256 795305663431469c…

MALICIOUS

PDF

46.5 KB Created: 2020-08-13 23:30:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5a8089197053668790464e3052dcdad6 SHA-1: 17740775cbf8a487ad8f457879c539230b41d04c SHA-256: 795305663431469c0ce0cc7bb511075d6070058544e00c7a6a888f0c21cf097a
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting an SEO link farm or a content-spinning operation. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is likely the primary malicious intent. The document body itself is largely unreadable binary data, but the presence of the redirector link and the sheer volume of other links strongly indicate a malicious purpose.

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/wb?keyword=same%20sound%20words%20list%20pdf
    • http://files.thepaisleyrose.ca/uploads/1/3/1/3/131383657/kulebuxevibaga.pdf
    • http://files.asnyderweb.com/uploads/1/3/1/3/131379113/bb8b86877d0.pdf
    • http://wevafer.artistsusiewest.com/uploads/1/3/0/7/130738902/vijujega_nunamuj_bovapipabager.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/9191/0038/files/jisufamesibotakodido.pdf
    • https://cdn.shopify.com/s/files/1/0441/4016/7320/files/python_clear_list.pdf
    • https://cdn.shopify.com/s/files/1/0431/6200/9755/files/44981772323.pdf
    • https://cdn.shopify.com/s/files/1/0428/7922/1927/files/tosipumagareru.pdf
    • https://cdn.shopify.com/s/files/1/0448/9006/3003/files/lok_sabha_election_date_2020_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/1110/5191/files/jemalugukewasagapageju.pdf
    • https://cdn.shopify.com/s/files/1/0432/5143/3627/files/osrs_wilderness_gwd.pdf
    • https://cdn.shopify.com/s/files/1/0429/2499/8819/files/carol_of_the_bells_piano_easy.pdf
    • https://cdn.shopify.com/s/files/1/0432/9403/2025/files/cfa_curriculum_2020.pdf
    • https://cdn.shopify.com/s/files/1/0432/7030/7995/files/dogiresalevupat.pdf
    • https://cdn.shopify.com/s/files/1/0435/2029/5064/files/26255312160.pdf
    • https://cdn.shopify.com/s/files/1/0437/9040/1685/files/gasowivuvawidor.pdf
    • https://cdn.shopify.com/s/files/1/0431/7007/0687/files/62061092470.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007889.bin
2068cd7dba785ecef65770e71cd029096e21c8bfb8277443d07950ef7078e02f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7889 5380 bytes
font_01_sfnt_off00008acb.bin
0f52defb57ffba74cfdb4c68d4ffc2cc9996b46f898e58d8d39bb440b1ea660f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8ACB 10224 bytes

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