Malicious PDF — malware analysis report

Static analysis result for SHA-256 21aa380d42c52582…

MALICIOUS

PDF

44.1 KB Created: 2020-08-23 18:42:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 54def2d47c133935b844ffe73e2386ef SHA-1: 7c221e416633b7360cc78d545a78878b81f128a0 SHA-256: 21aa380d42c52582b8017c7a23ef80a0851fcd7439cd9050474332c6cbbe4933
120 Risk Score

Malware Insights

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

The PDF contains a prominent link to 'ttraff.com' which is flagged as a malicious redirector, disguised with a lure about social security benefits. The document also exhibits characteristics of a link farm, with numerous embedded URLs pointing to various PDF files, many hosted on Shopify. The primary malicious link is https://ttraff.com/pify?keyword=social+security+benefits+taxable+amount+worksheet, which is likely intended to lead the user to a phishing or scam page.

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=social+security+benefits+taxable+amount+worksheet
    • http://jowake.wholesalemfo.com/uploads/1/3/1/4/131453197/zewason.pdf
    • http://files.jennygodley.com/uploads/1/3/0/7/130739693/woninup-muxema-zesegosota.pdf
    • http://files.tailoredrides.org/uploads/1/3/0/7/130776499/rezebe.pdf
    • https://cdn.shopify.com/s/files/1/0435/6574/4287/files/animal_taxonomy_and_systematics.pdf
    • https://cdn.shopify.com/s/files/1/0433/0582/8520/files/goxefosi.pdf
    • https://cdn.shopify.com/s/files/1/0430/7917/2257/files/73922984513.pdf
    • https://cdn.shopify.com/s/files/1/0436/5189/1358/files/vans_size_guide_toddler.pdf
    • https://cdn.shopify.com/s/files/1/0439/9595/5358/files/205861134.pdf
    • https://cdn.shopify.com/s/files/1/0435/6866/0643/files/88541881424.pdf
    • https://cdn.shopify.com/s/files/1/0437/1313/4757/files/any_to_dwg_converter_free_download_full_version.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e88.bin
4eebee5a534537e9154b50e2cd94a998141eec421f45c36865620980ebdead64		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E88 5572 bytes
font_01_sfnt_off00007157.bin
67b2a4728cb5663fa2a52b44c57420fbd1cc8004bf674d033a2152811ef93667		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7157 10536 bytes
font_02_sfnt_off00009548.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9548 4324 bytes

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