Malicious PDF — malware analysis report

Static analysis result for SHA-256 b808748de03473da…

MALICIOUS

PDF

47.5 KB Created: 2020-08-06 13:11:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7dd23e2e416ea7976222bed5f4481027 SHA-1: c8eeb38b90a199f64127a73ad229b30434c318b8 SHA-256: b808748de03473da4d7f31c2a416ed2f22db23095810b6a92a91c7508821c396
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to Shopify domains and one critical link to a known malicious redirector. The primary malicious URL is https://ttraff.com/pify?keyword=statistical+rethinking+2nd+edition+pdf+download, which likely serves as a lure to download further malicious content. The document body contains garbled text and embedded URLs, reinforcing the malicious intent.

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=statistical+rethinking+2nd+edition+pdf+download
    • http://files.numpucsh.com/uploads/1/3/1/6/131637047/3390631.pdf
    • http://files.littletweetstationery.co.uk/uploads/1/3/1/3/131379552/1d657b12.pdf
    • http://files.centrepointecincinnati.com/uploads/1/3/1/4/131406413/e08b8.pdf
    • http://files.thunderbearwoodsmiths.com/uploads/1/3/1/4/131406717/1665908.pdf
    • http://files.westfieldhsbands.org/uploads/1/3/1/4/131453054/givofukodeko.pdf
    • https://cdn.shopify.com/s/files/1/0435/2750/4031/files/golelusifujagelufov.pdf
    • https://cdn.shopify.com/s/files/1/0437/1811/5480/files/kujilatodixiv.pdf
    • https://cdn.shopify.com/s/files/1/0429/8106/4853/files/bimivojepepotezudivujup.pdf
    • https://cdn.shopify.com/s/files/1/0437/5396/3678/files/bihar_tet_notification.pdf
    • https://cdn.shopify.com/s/files/1/0435/7016/7966/files/marc_haven_cagliostro.pdf
    • https://cdn.shopify.com/s/files/1/0438/4364/9698/files/solixupafajexotemadupu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9226/3583/files/29645860650.pdf
    • https://cdn.shopify.com/s/files/1/0438/0390/2112/files/fezuredebifibogev.pdf
    • https://cdn.shopify.com/s/files/1/0430/3880/2073/files/rojimiwu.pdf
    • https://cdn.shopify.com/s/files/1/0434/8457/7956/files/rifaronovimoxatusas.pdf
    • https://cdn.shopify.com/s/files/1/0438/3899/6642/files/nozekewavenujuwawowe.pdf
    • https://cdn.shopify.com/s/files/1/0432/4913/9880/files/84103689407.pdf
    • https://cdn.shopify.com/s/files/1/0432/5592/2852/files/ranikunilizovil.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_off00006d74.bin
5ef75b0b1f77720c46a4c7ef71dfad95021d8850fdf125ea5a498fedc4a1030d
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D74 5808 bytes
font_01_sfnt_off00008148.bin
c8385f102a787d23962df54a0dcd8c3ba4e9cc4950462bb05ff8a76f34b4f2e7
pdf-font-stream PDF embedded font (sfnt) at offset 0x8148 15128 bytes