Malicious PDF — malware analysis report

Static analysis result for SHA-256 594f7b45aba6baa8…

MALICIOUS

PDF

71.3 KB Created: 2020-08-04 11:53:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 84457e4b98031f7693acdb103d33d206 SHA-1: ba67751bd53f30d13ce1e415607cd37d96986624 SHA-256: 594f7b45aba6baa8725793d4b71fa1ca8055475a5a4dd1261348ded0ecc58369
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector infrastructure at 'https://ttraff.cc/pify?keyword=halophytes+classification+pdf'. This suggests the document is designed to trick users into visiting malicious sites under the guise of providing a PDF. The document body itself is heavily obfuscated but contains the same URL, reinforcing the malicious intent. No scripts were extracted from this sample.

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.cc/pify?keyword=halophytes+classification+pdf
    • http://files.ilriverconference.org/uploads/1/3/0/8/130814393/texubilepalili-latisotu-punum.pdf
    • http://files.thehimalayanbazaar.com/uploads/1/3/1/4/131453706/xomuluses.pdf
    • http://gexeroni.conspiracycentral101.com/uploads/1/3/0/7/130776088/93c643e.pdf
    • http://files.midatlanticregionarma.com/uploads/1/3/1/4/131454116/pikebeguzojel_baxajelulekojer_zowuzelajitizal.pdf
    • http://files.theatrewesthigh.com/uploads/1/3/1/4/131407944/7361913.pdf
    • https://cdn.shopify.com/s/files/1/0443/6181/0076/files/paradise_lost_book_one.pdf
    • https://cdn.shopify.com/s/files/1/0436/4340/4441/files/bubifopexikuvebuxud.pdf
    • https://cdn.shopify.com/s/files/1/0434/1547/0245/files/66771323004.pdf
    • https://cdn.shopify.com/s/files/1/0431/4021/9041/files/glowgaze_dayt_se.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tikifulodu.pdf
    • https://cdn.shopify.com/s/files/1/0432/1371/7662/files/vukumejur.pdf
    • https://cdn.shopify.com/s/files/1/0431/5598/0439/files/23220853120.pdf
    • https://cdn.shopify.com/s/files/1/0431/9284/4448/files/readme_file_github.pdf
    • https://cdn.shopify.com/s/files/1/0427/9212/4572/files/wemeginuzogopinovepozazum.pdf
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/pukatam.pdf
    • https://cdn.shopify.com/s/files/1/0430/0200/3619/files/96358429628.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/79086372433.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_off0000d9f1.bin
db9a290132f91ab7b9fa5f04f27cda42fa4d18a3de0051de6f7b3e82dfc8a1f5
pdf-font-stream PDF embedded font (sfnt) at offset 0xD9F1 5208 bytes
font_01_sfnt_off0000ebb1.bin
f888a562a5b77895775795338c3c7d14704f90e6a2649a22771499f0f3b0c2f7
pdf-font-stream PDF embedded font (sfnt) at offset 0xEBB1 10552 bytes