Malicious PDF — malware analysis report

Static analysis result for SHA-256 2118b8debf4cddfa…

MALICIOUS

PDF

34.4 KB Created: 2020-09-01 00:58:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3bc4a2c4afcdbb0722ab7d9b555ab361 SHA-1: dc391049a4fcc0515188f7918a99c3fa881f4130 SHA-256: 2118b8debf4cddfadd9821929fb5ef883f2c1e8a927bd89f8f53e6577b8e4c71
120 Risk Score

Malware Insights

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

The PDF file was generated by wkhtmltopdf and contains a significant number of embedded links to external PDFs hosted on Shopify. One of these links, to 'ttraff.com', is flagged as a known malicious redirector. The presence of numerous links, including one to a malicious redirector, suggests an attempt to manipulate search engine results or to redirect users to malicious content. No scripts were extracted from this sample.

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/wix?keyword=burak+yeter+tuesday+song+free
    • https://cdn.shopify.com/s/files/1/0437/9305/5904/files/bodensee_radweg_karte.pdf
    • https://cdn.shopify.com/s/files/1/0430/6327/9767/files/37825013267.pdf
    • https://cdn.shopify.com/s/files/1/0430/3601/6803/files/guxixada.pdf
    • https://cdn.shopify.com/s/files/1/0437/8918/9272/files/56492596090.pdf
    • https://cdn.shopify.com/s/files/1/0438/9902/7611/files/97088424768.pdf
    • https://cdn.shopify.com/s/files/1/0428/8099/1388/files/10038391888.pdf
    • https://cdn.shopify.com/s/files/1/0429/7896/7703/files/40459800657.pdf
    • https://cdn.shopify.com/s/files/1/0470/9443/1902/files/file_manager_apk_pro.pdf
    • https://cdn.shopify.com/s/files/1/0432/4311/0564/files/90751478499.pdf
    • https://cdn.shopify.com/s/files/1/0429/2047/6828/files/88650648094.pdf
    • https://cdn.shopify.com/s/files/1/0430/7589/5447/files/analytical_thinking_questions.pdf
    • https://cdn.shopify.com/s/files/1/0434/5715/1142/files/abia_state_university_uturu_supplementary_form.pdf
    • https://cdn.shopify.com/s/files/1/0433/9780/8285/files/balojewibukotitefa.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_off000044a5.bin
3cf147839716ea4c77bc12ac91065bfbc6c5d6cdbd8d0e9286cf678cd1fe4f56		 pdf-font-stream PDF embedded font (sfnt) at offset 0x44A5 5260 bytes
font_01_sfnt_off000056a7.bin
47791c052458fdde6dc8cdfd45e3ac0661af1c5f4945f17353905948c8ce94cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56A7 11388 bytes

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