Malicious PDF — malware analysis report

Static analysis result for SHA-256 aee8093d8bc8c493…

MALICIOUS

PDF

39.1 KB Created: 2020-08-09 01:11:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8beb37007be498884bbdd8a9fd30f938 SHA-1: 68a0c3b331f1146397863678fdd30e8a814e97b7 SHA-256: aee8093d8bc8c4932b337e2cad67eb11c172fd4bb9d64d5f3a21b4b0e4c45e99
128 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, including one identified as a malicious redirector. The document body text, though heavily corrupted, contains phrases related to downloading a 'Thailand map pdf' and includes the malicious URL. The presence of a 'download button' heuristic further supports the lure mechanism. The primary malicious URL identified is https://ttraff.com/pify?keyword=thailand+map+pdf+download+free, which likely leads to further malicious content.

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=thailand+map+pdf+download+free
    • http://files.floridabestblueberries.com/uploads/1/3/1/4/131453450/loluwelosur.pdf
    • http://files.midwayk12.org/uploads/1/3/0/8/130873880/xifomonidogo.pdf
    • http://files.waterfeaturesbybluecreek.com/uploads/1/3/0/7/130775808/47808b3ec3d8.pdf
    • http://duvox.ancientstoriesforesl.com/uploads/1/3/1/4/131453247/c74d9bff8.pdf
    • https://cdn.shopify.com/s/files/1/0431/4015/3505/files/pipinalodavenegadufeg.pdf
    • https://cdn.shopify.com/s/files/1/0431/8914/1664/files/welding_machine_wiring_diagram.pdf
    • https://cdn.shopify.com/s/files/1/0431/8658/5749/files/zeredikabazilepivupup.pdf
    • https://cdn.shopify.com/s/files/1/0440/0264/0030/files/random_forest_regressor.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/meragavafeduxilaxopuxaw.pdf
    • https://cdn.shopify.com/s/files/1/0431/2032/8853/files/23197127021.pdf
    • https://cdn.shopify.com/s/files/1/0429/3866/3079/files/data_communication_and_networking.pdf
    • https://cdn.shopify.com/s/files/1/0427/8976/5276/files/tazufeweretogekasezat.pdf
    • https://cdn.shopify.com/s/files/1/0437/7962/1026/files/21387447003.pdf
    • https://cdn.shopify.com/s/files/1/0435/6826/7423/files/78670167333.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_off00005814.bin
ef19cd4edebfb69ab9855b72fe4a6206231fc16d3b97cff88c96f0e94568c911
pdf-font-stream PDF embedded font (sfnt) at offset 0x5814 5144 bytes
font_01_sfnt_off0000697a.bin
f1ef6bb50aaef15096d917a77dd915f519f893d7401fb3c7b77082c4621a10df
pdf-font-stream PDF embedded font (sfnt) at offset 0x697A 11872 bytes