Malicious PDF — malware analysis report

Static analysis result for SHA-256 98c38a403ea470c4…

MALICIOUS

PDF

44.5 KB Created: 2020-09-01 02:51:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4ca4120c5715fb1d22a8a6b978075b84 SHA-1: 7cbef62ba1713d405eab26a228a35d87d3656551 SHA-256: 98c38a403ea470c4c6cb3e5775f3356f9068c06a41d9c8289c0e16f35640555f
128 Risk Score

Malware Insights

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

The PDF contains embedded JavaScript and numerous links, with one critical heuristic identifying a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=bootstrap+components+template+free', suggesting a lure to a malicious site. The presence of embedded JavaScript and a link farm indicates an attempt to redirect the user to malicious content, likely for further exploitation or phishing.

Heuristics 4

  • 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 JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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.ru/pify?keyword=bootstrap+components+template+free
    • https://cdn.shopify.com/s/files/1/0429/2929/1427/files/20386810696.pdf
    • https://cdn.shopify.com/s/files/1/0438/4099/5490/files/aerobic_and_anaerobic_respiration_test.pdf
    • https://cdn.shopify.com/s/files/1/0430/6645/8265/files/763527406.pdf
    • https://static.usrfiles.com/ugd/30e015_0b47470254274e3484083a024089eb59.pdf
    • https://static.usrfiles.com/ugd/83e24f_a4c8e17c204f4d578b858f96f09264cf.pdf
    • https://cdn.shopify.com/s/files/1/0434/2281/0263/files/agile_project_management_creating_innovative_products_jim_highsmith.pdf
    • https://cdn.shopify.com/s/files/1/0430/9028/0609/files/43729918562.pdf
    • https://cdn.shopify.com/s/files/1/0433/8106/3838/files/99874982249.pdf
    • https://cdn.shopify.com/s/files/1/0435/4398/6330/files/subuxawatubesevisugojup.pdf
    • https://cdn.shopify.com/s/files/1/0466/8532/3428/files/helvetica_neue_condensed_bold_ttf.pdf
    • https://cdn.shopify.com/s/files/1/0439/2163/7544/files/project_charter_example_construction.pdf
    • https://cdn.shopify.com/s/files/1/0437/0884/2152/files/kodebolijogefitavu.pdf
    • https://cdn.shopify.com/s/files/1/0433/1778/8830/files/bapubedotesi.pdf
    • https://cdn.shopify.com/s/files/1/0435/8343/9011/files/barbados_slave_code_1661.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_off000070d7.bin
f335e4b9a13bce04717670842f4f5242b483f9b68a1c9edf07aacd0da91db78a
pdf-font-stream PDF embedded font (sfnt) at offset 0x70D7 5212 bytes
font_01_sfnt_off0000827f.bin
ad5daf5d1578448aca44c4a7a4006ee773300cda185bcebc17c0cbea85ef00f1
pdf-font-stream PDF embedded font (sfnt) at offset 0x827F 10272 bytes