Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a58d38d1d819a37…

MALICIOUS

PDF

44.8 KB Created: 2020-08-19 14:15:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6407cfe991b93e236f79f4c533e1102c SHA-1: 84db1bfdb3a68b9d873d9b12fc3e17d78ee9a101 SHA-256: 3a58d38d1d819a37b7d312a83ddbbf8c481b8df68285ac3843a9d0df3d43f6c1
120 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, embedding numerous external links, many of which point to Shopify-hosted PDFs. A critical heuristic identified a direct link to a known malicious redirector, ttraff.com, which is likely the primary malicious payload delivery mechanism. The document body contains garbled text and the URL for the redirector, suggesting a lure to trick users into clicking the malicious link.

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=buddha+badrinath+cartoon
    • http://jamofeda.marycollinshomes.com/uploads/1/3/0/7/130738799/5339328.pdf
    • http://files.fromtherootsuphealing.com/uploads/1/3/1/4/131453681/piterikagoje.pdf
    • http://xuraxo.sljdivinelyfired.com/uploads/1/3/1/8/131856257/db1339f2.pdf
    • https://cdn.shopify.com/s/files/1/0434/4899/1910/files/california_dmv_permit_test_2018_answers.pdf
    • https://cdn.shopify.com/s/files/1/0432/3888/3485/files/sesodakifuguso.pdf
    • https://cdn.shopify.com/s/files/1/0428/5012/3943/files/tipping_point_book_summary.pdf
    • https://cdn.shopify.com/s/files/1/0433/8178/4726/files/bsc_books_and_notes_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/0210/1923/files/sabaxojamapaviriguvipi.pdf
    • https://cdn.shopify.com/s/files/1/0431/7249/5519/files/mewisiromememafiwadolurup.pdf
    • https://cdn.shopify.com/s/files/1/0436/3796/4960/files/69323049583.pdf
    • https://cdn.shopify.com/s/files/1/0431/2052/5469/files/30407043817.pdf
    • https://cdn.shopify.com/s/files/1/0430/1560/2337/files/vukumitikut.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_off00005865.bin
1c76324cd5208dcacba8883ac1572e99b0512dd97ae69312391591ada6d8b7e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5865 5008 bytes
font_01_sfnt_off00006955.bin
9b73be89577a44fd80492793ba204510b5d1ccdf09aa2d02b83c6178d650a18d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6955 10444 bytes
font_02_sfnt_off00008d09.bin
f820b0517f8600bd1118f70bc5268437d38351526d960b5b3163085b42819f44		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D09 7372 bytes

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