Malicious PDF — malware analysis report

Static analysis result for SHA-256 51116ccc5d3af82a…

MALICIOUS

PDF

49.2 KB Created: 2020-08-10 15:37:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 76473e8dd3acbdf6c5e35ac67913c9b7 SHA-1: 3e1486e720b7fdb940ff1c614677286628efd8ce SHA-256: 51116ccc5d3af82ab26d9515b5ace80a15b1c46f1f13d48fa1c4a541b33b7fed
120 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a known malicious domain, ttraff.com. The document body, though heavily obfuscated, contains a reference to the same URL, suggesting a phishing or scam attempt disguised as a book download. The presence of numerous external PDF links also indicates a link farm strategy, likely to improve search engine ranking for malicious content.

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=callan+method+teacher+book+pdf
    • http://tibarozug.multilanguagebox.com/uploads/1/3/2/6/132682663/1890954.pdf
    • http://files.youngriteusa.org/uploads/1/3/0/8/130814397/4199bb.pdf
    • http://files.missourivalleychristianschool.org/uploads/1/3/0/7/130775368/jomosatenipomap.pdf
    • https://cdn.shopify.com/s/files/1/0428/4638/8380/files/15781684981.pdf
    • https://cdn.shopify.com/s/files/1/0432/1322/6139/files/33577063884.pdf
    • https://cdn.shopify.com/s/files/1/0435/8068/6497/files/satapivepafawipibabu.pdf
    • https://cdn.shopify.com/s/files/1/0433/2371/9845/files/rowatewikipunodebuk.pdf
    • https://cdn.shopify.com/s/files/1/0440/7430/3640/files/kiadb_building_bye_laws.pdf
    • https://cdn.shopify.com/s/files/1/0430/6875/2023/files/16343777732.pdf
    • https://cdn.shopify.com/s/files/1/0433/8450/4474/files/rabilozagigewut.pdf
    • https://cdn.shopify.com/s/files/1/0430/4227/5485/files/dialogues_pour_apprendre_le_francais.pdf
    • https://cdn.shopify.com/s/files/1/0433/0291/2158/files/95_lincoln_town_car.pdf
    • https://cdn.shopify.com/s/files/1/0434/5610/2565/files/27778501693.pdf
    • https://cdn.shopify.com/s/files/1/0432/2459/6642/files/79601937961.pdf
    • https://cdn.shopify.com/s/files/1/0433/4728/0026/files/mosatepopuzo.pdf
    • https://cdn.shopify.com/s/files/1/0431/9775/9643/files/jezijidirusarapanu.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_off000082c8.bin
0b6ba9e6e0348d6bcc40d975c87949e17edd90e22bce487f00f59e5c0cdfb895		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82C8 5328 bytes
font_01_sfnt_off000094b4.bin
fe42a92c51ce210568222dc2c1245113e843bf6b88169270fe6ace8dae39ec5c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x94B4 10304 bytes

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