Malicious PDF — malware analysis report

Static analysis result for SHA-256 210088a1022f9c70…

MALICIOUS

PDF

44.8 KB Created: 2020-08-17 17:09:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 927e465fc80d396176828bb0bb47febd SHA-1: 5876bc35e4abdd857cdee7ff3fc2e3cea46f33b0 SHA-256: 210088a1022f9c708b5a933ee8e95c49bd88640a8a0ed802df7abf68c4469b61
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, containing numerous embedded URLs. One prominent URL, 'https://ttraff.com/pify?keyword=cast+mobile+screen+to+android+tv', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to lure users to external malicious content. No scripts were extracted, and the file structure itself is a PDF, indicating a delivery mechanism focused on user interaction with links.

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=cast+mobile+screen+to+android+tv
    • http://bewuz.saraandreahoffman.com/uploads/1/3/2/6/132683001/daa434a1.pdf
    • http://files.simplydelisheats.com/uploads/1/3/1/4/131454034/muwitijixoxij_kezizi_memalewogum_rijumezewopijar.pdf
    • https://cdn.shopify.com/s/files/1/0429/9443/4207/files/75665795260.pdf
    • https://cdn.shopify.com/s/files/1/0429/9702/2871/files/17484043772.pdf
    • https://cdn.shopify.com/s/files/1/0446/6386/5497/files/58109728299.pdf
    • https://cdn.shopify.com/s/files/1/0433/9299/1399/files/30236595009.pdf
    • https://cdn.shopify.com/s/files/1/0454/2873/6168/files/23509892321.pdf
    • https://cdn.shopify.com/s/files/1/0432/7358/4793/files/cinquenta_tons_de_cinza_livro_online.pdf
    • https://cdn.shopify.com/s/files/1/0437/1690/3080/files/14425094008.pdf
    • https://cdn.shopify.com/s/files/1/0431/4136/5922/files/stay_hungry_stay_foolish_rashmi_bansal.pdf
    • https://cdn.shopify.com/s/files/1/0429/2172/2015/files/grey_knights_codex_8th_edition_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/5239/9777/files/logoriwifamudewina.pdf
    • https://cdn.shopify.com/s/files/1/0434/0593/4759/files/kuduxaxufopu.pdf
    • https://cdn.shopify.com/s/files/1/0431/7567/4024/files/amisom_mandate.pdf
    • https://cdn.shopify.com/s/files/1/0437/5019/5354/files/mufepufudo.pdf
    • https://cdn.shopify.com/s/files/1/0447/9365/9543/files/ledojoxudigurite.pdf
    • https://cdn.shopify.com/s/files/1/0433/9181/1734/files/arrugas_paco_roca.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_off00007142.bin
fbd4b663b1bf96e51b0a5e656d39a6721c0d19bba9a80722c1542d111bfbe9d3
pdf-font-stream PDF embedded font (sfnt) at offset 0x7142 5192 bytes
font_01_sfnt_off000082cd.bin
2ff4456392b192791450df5da31bf6dcd7d10173b227c0532bdae55ca77b6b96
pdf-font-stream PDF embedded font (sfnt) at offset 0x82CD 10384 bytes