Malicious PDF — malware analysis report

Static analysis result for SHA-256 21db4711e1a32ac7…

MALICIOUS

PDF

41.5 KB Created: 2020-08-16 00:17:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5391419eb47efced2f40f7278a2437e0 SHA-1: f5ecf689f4fc18c61843db86a4c1505064ae7b82 SHA-256: 21db4711e1a32ac7cfa0544bef499a8e71f190b2911adcd36affcacf644497fc
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains hosting other PDFs, which is indicative of a link farm for SEO manipulation or to distribute malicious content. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.com/wb?keyword=focused%20differentiation%20strategy%20pdf'. The document body, though heavily obfuscated, contains this URL and other PDF links, suggesting the primary goal is to redirect users to potentially harmful external sites.

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/wb?keyword=focused%20differentiation%20strategy%20pdf
    • http://files.bishopgumbleton.com/uploads/1/3/1/3/131379371/tokasinipegog.pdf
    • http://files.uslsawr.org/uploads/1/3/1/3/131383377/8730628.pdf
    • http://files.cybersecurityinc.net/uploads/1/3/2/6/132681938/natuwafegaga.pdf
    • http://mebuziw.mauriceshapero.com/uploads/1/3/1/4/131482995/wipisasorav.pdf
    • http://tavozak.midistrictalphas.org/uploads/1/3/0/7/130775934/86cbafc2c.pdf
    • https://cdn.shopify.com/s/files/1/0432/3826/0899/files/begixofarulino.pdf
    • https://cdn.shopify.com/s/files/1/0431/4434/7802/files/milefekeburige.pdf
    • https://cdn.shopify.com/s/files/1/0427/3415/7991/files/77843270531.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rejupabofutub.pdf
    • https://cdn.shopify.com/s/files/1/0432/9432/6949/files/zulasavelusoxix.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gamusuzojikifikukudubug.pdf
    • https://cdn.shopify.com/s/files/1/0427/9923/5228/files/latin_book_2.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/66541571973.pdf
    • https://cdn.shopify.com/s/files/1/0450/7149/9416/files/38939907511.pdf
    • https://cdn.shopify.com/s/files/1/0431/5657/0266/files/34103593247.pdf
    • https://cdn.shopify.com/s/files/1/0447/8458/2813/files/pokemon_emerald_rare_candies_gameshark_code.pdf
    • https://cdn.shopify.com/s/files/1/0434/7081/5397/files/71768614928.pdf
    • https://cdn.shopify.com/s/files/1/0435/2396/5079/files/negritude_movement.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_off000064f4.bin
47db9a363ae0260f01b5d9d0351c25b22e5ca27553ae7dcd93adb60fcd46ff0a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64F4 5348 bytes
font_01_sfnt_off0000773a.bin
99b30839ed43d134925c69c7771adbebac64e53d43a9dbb8b8a58f0e4af5fa0b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x773A 9908 bytes

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