Malicious PDF — malware analysis report

Static analysis result for SHA-256 20154f203ae4f7ed…

MALICIOUS

PDF

53.3 KB Created: 2020-08-11 19:27:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d8c8b428c68c6e57c875b9bec5ffa937 SHA-1: 7da001a0aafd5a7b1820cc7742034226a26e1e71 SHA-256: 20154f203ae4f7ed4ef72570b20bae1d283a93aae556b340255dfe4f0060ff88
128 Risk Score

Malware Insights

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

The PDF contains a link farm and a malicious redirector link pointing to ttraff.ru. The document body, though heavily obfuscated, contains the same URL as the redirector link. This suggests the document is designed to trick users into clicking the link, likely leading to a malicious download or exploit.

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.ru/pify?keyword=instrumen+akreditasi+rumah+sakit+2020+pdf
    • http://gasaxux.rileyringlets.com/uploads/1/3/1/6/131636719/4467545.pdf
    • http://files.walkinginthewordministries.net/uploads/1/3/2/3/132303189/e90b0.pdf
    • http://files.carneyrounduprodeo.org/uploads/1/3/1/4/131437149/5390971.pdf
    • http://files.blueridgebaptistchurch.org/uploads/1/3/0/8/130874265/2317157.pdf
    • https://cdn.shopify.com/s/files/1/0430/6858/8194/files/american_express_platinum_card_travel_insurance.pdf
    • https://cdn.shopify.com/s/files/1/0431/7508/4193/files/nopugiwujim.pdf
    • https://cdn.shopify.com/s/files/1/0434/6835/7796/files/4.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/96258555683.pdf
    • https://cdn.shopify.com/s/files/1/0432/5651/2676/files/lagexavusixuvodil.pdf
    • https://cdn.shopify.com/s/files/1/0433/0238/7867/files/vovolekasimeto.pdf
    • https://cdn.shopify.com/s/files/1/0433/5792/9622/files/palaxetejinukoraviwe.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/punafaga.pdf
    • https://cdn.shopify.com/s/files/1/0429/1916/6105/files/gimusesetomaraxerojafaw.pdf
    • https://cdn.shopify.com/s/files/1/0428/5857/8086/files/pokazedewopuva.pdf
    • https://cdn.shopify.com/s/files/1/0431/2920/8988/files/4218941017.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_off00008a95.bin
4df3f223b16be34ebb7ff7982be985bf73e16bed3bd13f34ecbe1714d750f676		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A95 5524 bytes
font_01_sfnt_off00009d2b.bin
315e6aa68a98a5d71863cd3a373decce24f4181bdaf1b665f1ef83ca3b31b709		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9D2B 13428 bytes

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