Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a80db138d99eb04…

MALICIOUS

PDF

48.0 KB Created: 2020-08-31 08:00:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 81ef7c80cc3559d7a78db4245d7ee9b8 SHA-1: 9ce8f6771c26f5371478536b277d1571d71c4e3e SHA-256: 8a80db138d99eb04d5b223c77b44474576b5a6ce9b514fc375ecf65e9bd96edc
120 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to a known malicious domain, disguised as a song download. The document body, though heavily obfuscated, contains the same lure text and the malicious URL. The PDF structure and embedded links suggest a social engineering tactic to redirect users to potentially harmful 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.ru/wix?keyword=vettaiyaadu+vilaiyaadu+mp3+song+down
    • https://static.usrfiles.com/ugd/b8c837_4d26fefe41eb4389beecdda60ea2ff8b.pdf
    • https://static.usrfiles.com/ugd/906e9f_7f1367b36e874ca4b08a4412fe66d418.pdf
    • https://static.usrfiles.com/ugd/b8c837_d0f66e605a964c489bee53e4186140f1.pdf
    • https://static.usrfiles.com/ugd/1c90dc_2fc61bece4e34ec181645ea961420a1b.pdf
    • https://cdn.shopify.com/s/files/1/0433/5907/6510/files/spelling_rules_book.pdf
    • https://cdn.shopify.com/s/files/1/0435/4326/5434/files/ririloxogenulasaparabe.pdf
    • https://cdn.shopify.com/s/files/1/0437/2378/4360/files/features_of_athenian_democracy.pdf
    • https://cdn.shopify.com/s/files/1/0433/5045/8526/files/spyder_python_3._6_64_bit.pdf
    • https://cdn.shopify.com/s/files/1/0428/3518/1724/files/zorijo.pdf
    • https://cdn.shopify.com/s/files/1/0432/9340/9438/files/67750392203.pdf
    • https://cdn.shopify.com/s/files/1/0451/3182/5317/files/pdf_atkins_phase_1.pdf
    • https://cdn.shopify.com/s/files/1/0430/0403/5221/files/orthographic_projection_examples_and_solutions.pdf
    • https://static.usrfiles.com/ugd/0fdb6d_65ed03f735ae4fefaabe62aa76f04e32.pdf
    • https://static.usrfiles.com/ugd/45fd81_97e024e4ea6d4f8b9383da75fd761756.pdf
    • https://static.usrfiles.com/ugd/5fd5c1_4a9b129c247042839f1e8ff02163d3b1.pdf
    • https://static.usrfiles.com/ugd/696117_45795e0fc3ef456ab8787979a851814f.pdf
    • https://static.usrfiles.com/ugd/8b9728_7d7a81970c2d4f8791d964c522d6761d.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_off00005e78.bin
35d970f833f3ec742d56c343729c4b76dd86bca28687c7545af71ecfb1948337
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E78 5448 bytes
font_01_sfnt_off00007102.bin
e7c1e96f293daa2680dc43dec5deef7c038de6634fb0b8afd2633aecf3b72920
pdf-font-stream PDF embedded font (sfnt) at offset 0x7102 16040 bytes
font_02_sfnt_off0000a320.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0xA320 4324 bytes