Malicious PDF — malware analysis report

Static analysis result for SHA-256 5498e9d82a31efb7…

MALICIOUS

PDF

35.2 KB Created: 2020-08-30 10:50:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f1db367f1433543d9ce16b3ce7c45355 SHA-1: 6eff2abbc8d0306068ae6e2182cc0dad129809f0 SHA-256: 5498e9d82a31efb70b693a28b97978fed84af86c33e65022fca29e8af0a96d02
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external PDF files hosted on Shopify. One prominent link, 'https://ttraff.com/wix?keyword=sc+sharma+accountancy+class+11+solutions+pdf', is identified as a malicious redirector. This suggests the document is designed to lead users to malicious sites under the guise of providing educational resources. No scripts were extracted from this sample.

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/wix?keyword=sc+sharma+accountancy+class+11+solutions+pdf
    • https://cdn.shopify.com/s/files/1/0431/8180/1629/files/betty_la_fea_y_su_transformacion.pdf
    • https://cdn.shopify.com/s/files/1/0432/8148/1884/files/cheat_engine_6._7_windows_10.pdf
    • https://cdn.shopify.com/s/files/1/0432/7515/7670/files/12764604603.pdf
    • https://cdn.shopify.com/s/files/1/0435/6240/1947/files/zebagukip.pdf
    • https://cdn.shopify.com/s/files/1/0430/2100/9053/files/33289561093.pdf
    • https://cdn.shopify.com/s/files/1/0431/3861/3415/files/74738129640.pdf
    • https://cdn.shopify.com/s/files/1/0431/1321/8210/files/kegiruvititukom.pdf
    • https://cdn.shopify.com/s/files/1/0428/2921/7958/files/kukivuxagojeno.pdf
    • https://static.usrfiles.com/ugd/4b874d_4cb76288f8474cabb7f4a0801cc4b51e.pdf
    • https://static.usrfiles.com/ugd/b8c837_2df6c566e62b470cab6cedf5e051cdec.pdf
    • https://static.usrfiles.com/ugd/b77b08_f8b1e9910f43437c96535feb256c0ac0.pdf
    • https://static.usrfiles.com/ugd/d775a9_a3757f0910334c37ae1dbbd1bb5f3b49.pdf
    • https://static.usrfiles.com/ugd/49be48_39cc70da8abb43fbb441eb01c3380714.pdf
    • https://cdn.shopify.com/s/files/1/0432/0781/9422/files/nejugibubibowovejewovive.pdf
    • https://cdn.shopify.com/s/files/1/0464/2445/7368/files/29906448860.pdf
    • https://cdn.shopify.com/s/files/1/0427/7446/2631/files/cartas_cruzadas_markus_zusak.pdf
    • https://cdn.shopify.com/s/files/1/0433/0042/1790/files/56255294574.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_off000049ef.bin
c30553c4dfe2f9abe2794029561d8eef162845c774beabf2aa074108c56c58b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x49EF 5652 bytes
font_01_sfnt_off00005d05.bin
062cf898a2315b6febd6fdf35d8f74e2e18941db1d67332abd2b2c4d449f70ae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D05 10092 bytes

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