Malicious PDF — malware analysis report

Static analysis result for SHA-256 e453ffd8dd47e1ac…

MALICIOUS

PDF

35.9 KB Created: 2020-08-18 21:22:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9012cf2646a60be9932688732793cd5b SHA-1: 32db28a499ae5cdd96c8bd10a63919e221253729 SHA-256: e453ffd8dd47e1ac2e6e2c089179bc4ff944be0f64cace2cea4a553b339c9a4a
120 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 Shopify domains, but one critical link redirects to `ttraff.com`. This domain is flagged as a malicious redirector. The document body, though heavily obfuscated, contains the same URL, suggesting the primary purpose is to redirect the user to potentially malicious content under the guise of educational worksheets.

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=mixed+tenses+worksheets+for+grade+8+pdf
    • http://nikod.crittercarelatrobe.com/uploads/1/3/0/7/130775734/lojilone-tenufojejore.pdf
    • http://files.thesentimentalgift.com/uploads/1/3/1/4/131483118/044bc.pdf
    • http://files.alabamafanaticon.org/uploads/1/3/1/4/131482931/tamibi_renuxosabebuxos.pdf
    • https://cdn.shopify.com/s/files/1/0431/1567/5815/files/wusubavob.pdf
    • https://cdn.shopify.com/s/files/1/0430/7235/6509/files/315_pares_biomagneticos.pdf
    • https://cdn.shopify.com/s/files/1/0431/2337/6277/files/61702033257.pdf
    • https://cdn.shopify.com/s/files/1/0439/9231/8110/files/20878059626.pdf
    • https://cdn.shopify.com/s/files/1/0432/8918/2376/files/xeladeviwinavura.pdf
    • https://cdn.shopify.com/s/files/1/0436/3337/7440/files/femomevizonebojego.pdf
    • https://cdn.shopify.com/s/files/1/0436/5382/4677/files/vudumesalibitusajaxojoge.pdf
    • https://cdn.shopify.com/s/files/1/0432/3550/8392/files/tifagokiso.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/65294746239.pdf
    • https://cdn.shopify.com/s/files/1/0433/3839/9912/files/rurotijalasexafewukeka.pdf
    • https://cdn.shopify.com/s/files/1/0428/6568/8743/files/74868967857.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_off00004c5e.bin
aa7ab856ebbb2b07e23d3f39783644363a78c962fac102d4be5af8ec91b649dd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4C5E 5696 bytes
font_01_sfnt_off00005fde.bin
e12adb9331efad34da9b075daa0f7d19dc0555409aafb289afdfd466cd329f5d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FDE 10280 bytes

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