Malicious PDF — malware analysis report

Static analysis result for SHA-256 88d89007c72919d4…

MALICIOUS

PDF

56.4 KB Created: 2020-08-08 20:54:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6298bb815df7b01514020b7dcd7dbdc7 SHA-1: ea6078490424fb04f813145cc67c06585dee0282 SHA-256: 88d89007c72919d400b8290c9deef691d538adcb54528f7c5d46a60a6c6f5317
120 Risk Score

Malware Insights

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

The PDF document contains numerous links, including one pointing to a known malicious redirector at 'ttraff.com'. The document body text, though heavily obfuscated, appears to be a lure for a book download. The presence of a malicious redirector strongly suggests the intent is to lead the user to a malicious site for further exploitation or credential harvesting. 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/wb?keyword=spoken%20english%20in%20tamil%20book%20pdf
    • http://files.fantasydraftkit.net/uploads/1/3/0/9/130969386/dekibukexedozu-sajajitovubuwe.pdf
    • http://mavaga.matthewbarbee.com/uploads/1/3/1/6/131637814/valuxa-serixudawa-sezepo-kabesi.pdf
    • http://files.triviumtriathlon.co.za/uploads/1/3/1/3/131378899/a5822f328332e0a.pdf
    • http://kuragu.breinerlawllc.com/uploads/1/3/0/8/130874431/8381042.pdf
    • https://cdn.shopify.com/s/files/1/0428/2315/5878/files/rebisabet.pdf
    • https://cdn.shopify.com/s/files/1/0433/1339/7913/files/42910038949.pdf
    • https://cdn.shopify.com/s/files/1/0437/2175/2726/files/rifonoliwomitosupifise.pdf
    • https://cdn.shopify.com/s/files/1/0428/5893/8531/files/taralobadetatadedetipil.pdf
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/likuvunoxibev.pdf
    • https://cdn.shopify.com/s/files/1/0427/9474/6023/files/pedim.pdf
    • https://cdn.shopify.com/s/files/1/0438/7880/9755/files/51526594166.pdf
    • https://cdn.shopify.com/s/files/1/0433/9744/7831/files/cards_against_humanity_answers.pdf
    • https://cdn.shopify.com/s/files/1/0429/2172/2015/files/gediluletiputoravow.pdf
    • https://cdn.shopify.com/s/files/1/0431/1243/1770/files/99280845467.pdf
    • https://cdn.shopify.com/s/files/1/0438/9791/3512/files/57570407211.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005dc3.bin
8f3ade1567c9d8fe1bd11e11802dffe90c5e878720e1c02d42e000fe95cb5626		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DC3 11360 bytes
font_01_sfnt_off000082cf.bin
d1163b1246fbd7ce854be4f749f0ecb58e7c27b3c44843f5a1193f1bfebf81aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82CF 5664 bytes
font_02_sfnt_off000095ef.bin
75f7bab12d36d43e2d27b7c0005eaca34fff2b3a7fe5d753f707771e34db81a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x95EF 12636 bytes
font_03_sfnt_off0000bee8.bin
0d7a92828fb34c46272def7401d297891c72c028a4bdfa4d2814ce18bde6b281		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBEE8 16164 bytes

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