Malicious PDF — malware analysis report

Static analysis result for SHA-256 5607dd34b3dbdb33…

MALICIOUS

PDF

50.1 KB Created: 2020-07-28 11:15:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6d15a5621ced1ceb9670c9db851b240a SHA-1: 23b03909b32462120d974910836a1c37715f7add SHA-256: 5607dd34b3dbdb334e9144c16d2cd6e020a243a514db3a66e76593cc62d85da1
128 Risk Score

Malware Insights

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

The PDF contains embedded JavaScript and multiple links, with a critical heuristic identifying a malicious redirector. The primary malicious URL, https://ttraff.ru/pify?keyword=thunderstruck+bagpipe+music+sheet, is used to redirect users, likely to a phishing or malware distribution site. The document also exhibits characteristics of a link farm, with numerous external PDF links, suggesting an attempt to obscure the malicious destination and potentially improve search engine ranking for benign-looking content.

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=thunderstruck+bagpipe+music+sheet
    • http://files.joshuaewilliams.com/uploads/1/3/1/3/131398498/kazenuvunojep-mofujalabijagup.pdf
    • http://files.jordanmooredesigns.com/uploads/1/3/2/7/132740665/5121100.pdf
    • http://files.hudsonjewellery.co.uk/uploads/1/3/1/4/131407802/japizipe.pdf
    • http://files.rylcult.com/uploads/1/3/1/3/131379409/fetub.pdf
    • http://files.wisconsinbaroque.org/uploads/1/3/0/7/130740191/4aeb84.pdf
    • https://cdn.shopify.com/s/files/1/0434/0681/9493/files/55868528461.pdf
    • https://cdn.shopify.com/s/files/1/0430/1357/0709/files/garogiw.pdf
    • https://cdn.shopify.com/s/files/1/0441/2545/4488/files/menetabovurupukolenuxari.pdf
    • https://cdn.shopify.com/s/files/1/0434/8208/7576/files/fotasuze.pdf
    • https://cdn.shopify.com/s/files/1/0430/8421/8532/files/94395549643.pdf
    • https://cdn.shopify.com/s/files/1/0427/9074/8316/files/wowilagulojumejozubalaros.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/botudurodakokebavexosox.pdf
    • https://cdn.shopify.com/s/files/1/0437/7211/7141/files/boxoxolazusuxe.pdf
    • https://cdn.shopify.com/s/files/1/0432/3196/9438/files/lanosifuras.pdf
    • https://cdn.shopify.com/s/files/1/0430/0675/4970/files/68432847744.pdf
    • https://cdn.shopify.com/s/files/1/0437/0235/4070/files/xajezatiwavim.pdf
    • https://cdn.shopify.com/s/files/1/0434/0183/8757/files/16651484741.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000702a.bin
95267637e1df655388913888fc18c7378997009c69146c1830cc6ae27160ede0
pdf-font-stream PDF embedded font (sfnt) at offset 0x702A 5380 bytes
font_01_sfnt_off00008237.bin
97bad34667d4c0196fb3c5f4804ba729a08938a8f74fb65a8759a7e9f7bcb201
pdf-font-stream PDF embedded font (sfnt) at offset 0x8237 10364 bytes
font_02_sfnt_off0000a5ec.bin
184efd0e138a9418359f6897f9ac56b5cd93cafbd57abf30711ac2aee7e18832
pdf-font-stream PDF embedded font (sfnt) at offset 0xA5EC 16120 bytes