Malicious PDF — malware analysis report

Static analysis result for SHA-256 df9818123504208e…

MALICIOUS

PDF

34.6 KB Created: 2020-08-25 06:52:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 94df5255805370154f93c9dc72b8164d SHA-1: ec8868cccce65a37bd5f7c309557f5e001e41879 SHA-256: df9818123504208ea207e0c8e76240487f99c20294555bf3f7ac9b06d5212bc0
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in

The PDF contains a link farm designed to appear as educational content, but it redirects to malicious infrastructure at ttraff.com. The document body, though heavily obfuscated, contains the same redirect URL, confirming its malicious intent. The presence of numerous links to Shopify-hosted PDFs suggests an attempt to manipulate search engine results for malicious redirection.

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=graphing+quadratic+functions+guided+notes+answers+pdf
    • http://files.theworksofeugene.com/uploads/1/3/1/1/131164152/kexutitufuwirubu.pdf
    • https://cdn.shopify.com/s/files/1/0436/9540/7269/files/altec_lansing_life_jacket_2_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/6854/5441/files/wobenewirigusudizononapi.pdf
    • https://cdn.shopify.com/s/files/1/0431/9232/0161/files/timesurajoserilaxefixanim.pdf
    • https://cdn.shopify.com/s/files/1/0431/3631/9639/files/rowazegitonipok.pdf
    • https://cdn.shopify.com/s/files/1/0431/6643/3435/files/crazy_machines_alternative_android.pdf
    • https://cdn.shopify.com/s/files/1/0428/6211/7031/files/85629678432.pdf
    • https://cdn.shopify.com/s/files/1/0430/8670/8885/files/pinavekubujededu.pdf
    • https://cdn.shopify.com/s/files/1/0434/7209/3336/files/67728853969.pdf
    • https://cdn.shopify.com/s/files/1/0443/0177/9100/files/amnesia_collection_switch_performance.pdf
    • https://cdn.shopify.com/s/files/1/0430/4365/1741/files/nugol.pdf
    • https://cdn.shopify.com/s/files/1/0433/1952/5534/files/20985965848.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_off00004825.bin
bba45ae3c0d30e1a1d30949d76f922a571dc1e4cebedf81f92540d21c38f66bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4825 5632 bytes
font_01_sfnt_off00005b55.bin
1251f6ab28bd864b27df61e6c2f302ce5723a2ee2649a7e540cc5b3b6b181246		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B55 9972 bytes

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