Malicious PDF — malware analysis report

Static analysis result for SHA-256 54a7c6091d0be725…

MALICIOUS

PDF

45.9 KB Created: 2020-08-12 23:39:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a6499efaf8e0c2fdff93ebe45f8ccbf0 SHA-1: a283995e5dc32a0462267b4124a110cb3a9118ad SHA-256: 54a7c6091d0be7258cf31aa9a28fccad20cb93a6dd2f22df93e393407c632e03
150 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to Shopify domains, but one critical link redirects to 'ttraff.com'. This domain is flagged as a malicious redirector, suggesting the document is a lure to a malicious site. The presence of 'multiplication and division worksheets grade 4 pdf' in the URL indicates a social engineering pretext. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=multiplication+and+division+worksheets+grade+4+pdf
    • http://tebuf.simplyyounutrition.com/uploads/1/3/0/7/130776407/9507057.pdf
    • http://files.nxtgenerationenergy.com/uploads/1/3/2/7/132740415/sodegebu.pdf
    • http://files.straighttothebar.nl/uploads/1/3/1/8/131856430/8e519718eff.pdf
    • https://cdn.shopify.com/s/files/1/0427/5827/5238/files/79859055985.pdf
    • https://cdn.shopify.com/s/files/1/0434/2611/9847/files/las_enseanzas_de_don_juan.pdf
    • https://cdn.shopify.com/s/files/1/0437/2529/1674/files/81757867097.pdf
    • https://cdn.shopify.com/s/files/1/0427/9504/0924/files/bifujepovubipufu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/61403973964.pdf
    • https://cdn.shopify.com/s/files/1/0433/7480/5148/files/elementary_surveying_13th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0432/9707/9460/files/oreillys_fargo_nd.pdf
    • https://cdn.shopify.com/s/files/1/0429/7683/7785/files/pigizozexe.pdf
    • https://cdn.shopify.com/s/files/1/0433/6055/1070/files/american_heart_association_bls_book.pdf
    • https://cdn.shopify.com/s/files/1/0433/2853/6744/files/nuzogenofeposexazegiw.pdf
    • https://cdn.shopify.com/s/files/1/0434/2831/5288/files/60190681426.pdf
    • https://cdn.shopify.com/s/files/1/0437/5976/3617/files/caries_dental_diagnostico.pdf
    • https://cdn.shopify.com/s/files/1/0435/0833/4744/files/test_de_aprendizaje_visual_auditivo_y_kinestesico.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_off000072f3.bin
9c3f4d667edff089876f376ed86f414b79d054f76f501010df9d19c70e4ec76c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72F3 5728 bytes
font_01_sfnt_off0000868d.bin
efec961061ced9a9b560958d8c46b0f42f908218eb1f987352c913d95ae3c6c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x868D 10632 bytes

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