Malicious PDF — malware analysis report

Static analysis result for SHA-256 459533bc2eb7150e…

MALICIOUS

PDF

41.8 KB Created: 2020-08-31 12:44:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c4668865d4653da916c2e5955f3e6128 SHA-1: a00b019c7ff4f339b5f4735d935a9e8ead6bdb92 SHA-256: 459533bc2eb7150e7f509908a2e53fabe5acfd6f3e85a1b65cf22ffc69fc57a4
130 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to 'Android oyun club subway surf hile indir' and a call-to-action phrase, suggesting a lure for potentially unwanted software or malware. The presence of a visual download button further supports this. The primary IOC is the redirector URL, which likely leads to the final malicious payload.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.com/wix?keyword=android+oyun+club+subway+surf+hile+indir
    • https://static.usrfiles.com/ugd/544c7e_2f2d8f03f6c2446fa128dde8a850132d.pdf
    • https://static.usrfiles.com/ugd/b11f6d_71a1940b2caf49b4a2d234a7f0fc6dd6.pdf
    • https://static.usrfiles.com/ugd/9ff9b8_d1cc7c699f7545c599a9136fa1d8c492.pdf
    • https://static.usrfiles.com/ugd/02beb7_3c0e5c99ce96491095975c6b09aab85f.pdf
    • https://cdn.shopify.com/s/files/1/0437/4098/7543/files/43519062008.pdf
    • https://cdn.shopify.com/s/files/1/0431/4556/0219/files/xalivoteriragipem.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mefawubizujoki.pdf
    • https://cdn.shopify.com/s/files/1/0429/7919/7081/files/26544100035.pdf
    • https://cdn.shopify.com/s/files/1/0430/9044/4445/files/48929903480.pdf
    • https://cdn.shopify.com/s/files/1/0438/7926/8520/files/paper_airplane_competition_rules.pdf
    • https://cdn.shopify.com/s/files/1/0462/2696/4631/files/34045050541.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_off0000658a.bin
d1326200f931170c4e530e5204cdc41a9f06e243865c2e56a4f1313effd81a0e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x658A 5432 bytes
font_01_sfnt_off00007819.bin
a493fe3fb47b6cfe5070408f6c626503da34627dd14c314493a91ac1d676a86e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7819 10020 bytes

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