Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6be541733a67ce8…

MALICIOUS

PDF

36.3 KB Created: 2020-08-28 09:05:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8a4e2f1d81b27fb841fcf03f64fecc65 SHA-1: f0221e9c9fca11984dbb28045c4433085565dd29 SHA-256: e6be541733a67ce8438628e2133222f005611aa84cc0d52500b09b812396ae9f
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF file contains numerous embedded links, a common tactic for phishing or malware distribution. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is used to obscure the final destination. The document body, though heavily obfuscated, contains text related to a book anthology and the PDF creation tool, suggesting a lure. The presence of many external PDF links, including those hosted on Shopify, indicates a link farm strategy to potentially distribute further malicious content or to improve SEO for malicious 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/pify?keyword=the+scribner+anthology+of+contemporary+short+fiction+table+of+contents
    • http://gerox.annehuthartist.com/uploads/1/3/1/3/131379641/wevek-bebigikaz-moxarijipixo-wikakizatip.pdf
    • http://siroto.visedal.org/uploads/1/3/0/8/130814328/pitudajuwewojug-kuzuzebewan.pdf
    • http://liwobelu.uamanchester.com/uploads/1/3/2/7/132712354/7027785.pdf
    • http://jopapu.oneilllab.com/uploads/1/3/1/6/131606490/fd4f011e457e2e.pdf
    • https://cdn.shopify.com/s/files/1/0432/7600/9622/files/i_am_alone_images_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/8954/2809/files/buffer_app_android.pdf
    • https://cdn.shopify.com/s/files/1/0433/5271/9515/files/karanofidezate.pdf
    • https://cdn.shopify.com/s/files/1/0429/1887/1207/files/sokabizawikolir.pdf
    • https://cdn.shopify.com/s/files/1/0429/6779/3817/files/poganozotunise.pdf
    • https://cdn.shopify.com/s/files/1/0431/2036/1629/files/1998_yamaha_timberwolf_250_service_m.pdf
    • https://cdn.shopify.com/s/files/1/0428/5222/1091/files/11338332241.pdf
    • https://cdn.shopify.com/s/files/1/0427/8845/4559/files/formation_aftral_montpellier.pdf
    • https://cdn.shopify.com/s/files/1/0440/4012/6614/files/ludiruxe.pdf
    • https://cdn.shopify.com/s/files/1/0428/5058/2684/files/88604486887.pdf
    • https://cdn.shopify.com/s/files/1/0435/7714/7547/files/adobe_flash_player_windows_10_64.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/muxajuvorupi.pdf
    • https://cdn.shopify.com/s/files/1/0431/1056/3994/files/34429462459.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_off00004f3d.bin
85ad03cc42a272efa536e6d2056727d4f3ed0fab79d374ae498bbd8d9e30d770
pdf-font-stream PDF embedded font (sfnt) at offset 0x4F3D 5620 bytes
font_01_sfnt_off00006232.bin
52d1223574cf8480f02752b25d22fd588973a637240a77c72b1cffa07d7c9ce5
pdf-font-stream PDF embedded font (sfnt) at offset 0x6232 9836 bytes