Malicious PDF — malware analysis report

Static analysis result for SHA-256 87e678231affb9f5…

MALICIOUS

PDF

42.9 KB Created: 2020-08-02 15:49:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3cbde168a92d4df67b516d7ffe2c6311 SHA-1: c6062f4bda36803ea97d08f6f15cdde28c24a403 SHA-256: 87e678231affb9f5ffdc5c67aa5a24ef9df8f628df6e53d397f6d0cc377e81b8
128 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a download button, aiming to trick users into clicking it. The document body and embedded artifacts suggest it is a lure related to file conversion. The primary malicious IOC is the ttraff.com redirector URL.

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/pify?keyword=convert+xfdl+to+pdf+online+free
    • http://files.chellesparklycorner.com/uploads/1/3/0/7/130739991/3c27d3.pdf
    • http://files.perfectlyimperfectperfectionist.com/uploads/1/3/1/8/131857114/witulufelagak_puwuzowofu.pdf
    • http://files.clareungerceramics.com/uploads/1/3/2/7/132740249/febumutevabunu-tuxixi.pdf
    • http://files.mintmarktogo.com/uploads/1/3/2/7/132740580/63834a37.pdf
    • http://files.freshskintattoos.com/uploads/1/3/1/3/131381241/vajevam.pdf
    • https://cdn.shopify.com/s/files/1/0431/9051/7917/files/zutazakabetaj.pdf
    • https://cdn.shopify.com/s/files/1/0430/0426/4602/files/fumosakevo.pdf
    • https://cdn.shopify.com/s/files/1/0433/2158/9913/files/59642769099.pdf
    • https://cdn.shopify.com/s/files/1/0430/9513/0266/files/cb._nav_run._drift._transit._foundation.pdf
    • https://cdn.shopify.com/s/files/1/0432/3059/3192/files/greed_machine_isaac.pdf
    • https://cdn.shopify.com/s/files/1/0431/2596/4949/files/85259776406.pdf
    • https://cdn.shopify.com/s/files/1/0434/0029/8648/files/dakexubudepizamofotoze.pdf
    • https://cdn.shopify.com/s/files/1/0436/7699/1653/files/assassin_s_creed_black_flag_multiplayer.pdf
    • https://cdn.shopify.com/s/files/1/0433/7877/0076/files/multiply_strings_java.pdf
    • https://cdn.shopify.com/s/files/1/0437/7922/7810/files/96439048196.pdf
    • https://cdn.shopify.com/s/files/1/0430/1609/3849/files/28542845959.pdf
    • https://cdn.shopify.com/s/files/1/0430/0357/6481/files/safopasiwimilividiteme.pdf
    • https://cdn.shopify.com/s/files/1/0429/2175/4787/files/wuwomipokoma.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_off00006bbf.bin
aaa2a79829146eb63884c97f13a431d99fb41ca6935fe9751153481bd624a526
pdf-font-stream PDF embedded font (sfnt) at offset 0x6BBF 4680 bytes
font_01_sfnt_off00007bc6.bin
f887dff5f0c3f32648ea15fc4fbcc5dfe1a521ed39c32c4804fdb899a4bff19b
pdf-font-stream PDF embedded font (sfnt) at offset 0x7BC6 10128 bytes