Malicious PDF — malware analysis report

Static analysis result for SHA-256 b062f2815aff1f34…

MALICIOUS

PDF

45.5 KB Created: 2020-08-28 23:55:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c11fbef11247527605d0387970468c4a SHA-1: 1d41a8ea1119691b16f140fa13a8c83a49f5db60 SHA-256: b062f2815aff1f34b6b61d22094cb2d7ba137091372545ef6c25d886a746c285
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external PDF files, characteristic of a link farm. One prominent link, 'https://ttraff.ru/wix?keyword=everybody+loves+somebody+piano+sheet+music', is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL and other Shopify links, suggesting a lure to download potentially malicious content disguised as sheet music. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=everybody+loves+somebody+piano+sheet+music
    • https://cdn.shopify.com/s/files/1/0437/8837/0072/files/playground_sessions_torrent.pdf
    • https://cdn.shopify.com/s/files/1/0436/8770/6774/files/violin_pop_sheet_music_books.pdf
    • https://cdn.shopify.com/s/files/1/0463/5557/9042/files/puvomuruwirijejuparozaj.pdf
    • https://cdn.shopify.com/s/files/1/0438/5406/9910/files/hindware_bathroom_fittings_price_list.pdf
    • https://cdn.shopify.com/s/files/1/0429/7339/7145/files/44493113547.pdf
    • https://static.usrfiles.com/ugd/b8c837_fb4d1231028042aa8fe9fca92ba0e1e0.pdf
    • https://static.usrfiles.com/ugd/b8c837_5c5d0e8ef8cc449fb11bb7d577dc25a8.pdf
    • https://static.usrfiles.com/ugd/b8c837_e205eb3363e2408e819946be9afc4edc.pdf
    • https://static.usrfiles.com/ugd/b8c837_c501d8fa13944c5da4245ccb5664cdc9.pdf
    • https://static.usrfiles.com/ugd/b8c837_f8cb6a49217443a2bd38dc59a5914f8a.pdf
    • https://static.usrfiles.com/ugd/b8c837_b617370c43ad47229a90c2b3610463ac.pdf
    • https://static.usrfiles.com/ugd/b8c837_3bfb702965b1477b80a3483ce8996ab9.pdf
    • https://static.usrfiles.com/ugd/b8c837_778fabad083c45bcac7329df819bf7d4.pdf
    • https://static.usrfiles.com/ugd/b8c837_24eca2a73b324c8b913d0c713845b476.pdf
    • https://static.usrfiles.com/ugd/b8c837_9e2d0362b9c4402db62c9296864173e9.pdf
    • https://static.usrfiles.com/ugd/b8c837_a8f2906ae8a04caa8d393c15974df4cc.pdf
    • https://static.usrfiles.com/ugd/b8c837_83c94c35d1d04a19bc32a8329cb88f04.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_off0000658e.bin
6fa918c4905a38b771a0420554c02d6c5490ffba112005b2b28074468b83414e
pdf-font-stream PDF embedded font (sfnt) at offset 0x658E 5572 bytes
font_01_sfnt_off00007852.bin
d7b30872427a7470143be149d4c0e9572bc7a76240cb808f35c0d974d3a98886
pdf-font-stream PDF embedded font (sfnt) at offset 0x7852 14832 bytes