Malicious PDF — malware analysis report

Static analysis result for SHA-256 f645b556b04c8418…

MALICIOUS

PDF

73.4 KB Created: 2020-09-08 10:31:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 92f29c9a694c7c42586f42ef740ee428 SHA-1: b31b3df6077e866ec7147dafbbd747ef33ed772f SHA-256: f645b556b04c84186eeb68372f1c363d0d6e4a35ca620485782581c0f4efe62b
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in T1059.001 PowerShell

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.link/pify?keyword=atacama+desert+travel+guide'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, including one to 'https://static.usrfiles.com/ugd/9ff9b8_09797f1c547b47d3a2fee491b6517c7c.pdf'. The document body, though heavily obfuscated, contains text related to a travel guide, suggesting a lure to entice users to click the malicious link.

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.link/pify?keyword=atacama+desert+travel+guide
    • https://static.usrfiles.com/ugd/9ff9b8_09797f1c547b47d3a2fee491b6517c7c.pdf
    • https://static.usrfiles.com/ugd/12f4eb_9aadfe1d120d47ce80cc63b4776f8502.pdf
    • https://static.usrfiles.com/ugd/ce0e6d_e321a69be6c845b38704a21d1a9d308c.pdf
    • https://static.usrfiles.com/ugd/957eb4_a80879f2fce9448d9b39503b2116cba2.pdf
    • https://cdn.shopify.com/s/files/1/0432/5877/3662/files/fulanizipuwero.pdf
    • https://cdn.shopify.com/s/files/1/0437/3908/7002/files/71277972350.pdf
    • https://cdn.shopify.com/s/files/1/0434/6550/6966/files/99675113351.pdf
    • https://cdn.shopify.com/s/files/1/0439/5276/7131/files/todifuma.pdf
    • https://cdn.shopify.com/s/files/1/0430/6875/2023/files/68074157507.pdf
    • https://cdn.shopify.com/s/files/1/0430/5184/3737/files/chamberlain_liftmaster_professional_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/7870/4536/files/wigoroxo.pdf
    • https://cdn.shopify.com/s/files/1/0465/9121/3733/files/best_game_console_emulators_for_android.pdf
    • https://cdn.shopify.com/s/files/1/0427/4677/3660/files/88636489052.pdf
    • https://cdn.shopify.com/s/files/1/0432/2469/4939/files/30331061649.pdf
    • https://cdn.shopify.com/s/files/1/0437/1637/8773/files/91983440071.pdf
    • https://cdn.shopify.com/s/files/1/0428/1221/1359/files/vesulosavavusafukonege.pdf
    • https://cdn.shopify.com/s/files/1/0433/9616/9886/files/xuwukenopazon.pdf
    • https://cdn.shopify.com/s/files/1/0440/9245/7112/files/automatic_refresher_firefox.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bf17.bin
42dd0e269eacc3d332689bee76d41d62d7d07aa89c63847e0605f754e90d1c3f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBF17 4976 bytes
font_01_sfnt_off0000d004.bin
8cf75d23fe31556bb43f2a411d8c6826b2167f7e29f8f4a652db04cbbf49f09e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD004 10676 bytes
font_02_sfnt_off0000f4b8.bin
8d0ca5441952925faa6f68d28470995fcd5e3edd800b1977fac83179433ae1db		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF4B8 16136 bytes
font_03_sfnt_off000109a8.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x109A8 4324 bytes

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