Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe0e87a15e9b2686…

MALICIOUS

PDF

53.6 KB Created: 2020-09-02 14:58:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7fedd29ef686e9831ea37af97d081d00 SHA-1: 29361f281173f307568e4ed72934bb49097d7baa SHA-256: fe0e87a15e9b26866cd117f5c67cf374a81a37fbdaddc50cf1117d049a2f974d
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One critical heuristic identified a link to a known malicious redirector at ttraff.ru, which is likely the primary malicious payload delivery mechanism. The document body, though heavily obfuscated, contains references to movie downloads, suggesting a lure to entice users to click the malicious links.

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.ru/pify?keyword=avatar+movie++1080p
    • https://cdn.shopify.com/s/files/1/0432/1217/7572/files/29824526265.pdf
    • https://cdn.shopify.com/s/files/1/0433/5930/5880/files/google_chrome_mac.pdf
    • https://cdn.shopify.com/s/files/1/0429/3866/3079/files/windows_10_anniversary_download_iso.pdf
    • https://static.usrfiles.com/ugd/0bcf16_3ff426c972434abb9dc0c8545a1ce92c.pdf
    • https://static.usrfiles.com/ugd/e32576_28a5d16290614433b60ab46a48ccec3a.pdf
    • https://static.usrfiles.com/ugd/b88e3d_42738181f6044853a4ebe9df4be41867.pdf
    • https://cdn.shopify.com/s/files/1/0435/3123/9588/files/hp_proliant_dl380_g5.pdf
    • https://cdn.shopify.com/s/files/1/0436/5352/9753/files/libertango_music_sheet_sax.pdf
    • https://cdn.shopify.com/s/files/1/0433/0242/0644/files/85298464606.pdf
    • https://static.usrfiles.com/ugd/ea5d7b_d741afbf722c4d538fa2464ec25e370b.pdf
    • https://static.usrfiles.com/ugd/455f95_3dacabb59a874b1086a79aa4289041c1.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006789.bin
2b89dcebe5dbd661b82ac59a25c5bab9e72d9c2da156fc9990721a230640001b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6789 3016 bytes
font_01_sfnt_off0000724e.bin
8db212a6d7dce06ae9ba0ad242fe544e7179e85c936c9b70e7edf277f8cc3ba5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x724E 5192 bytes
font_02_sfnt_off000083e8.bin
51ebeec29509b87aa858d500e37ac8853184703d07d1f913ce36d8e1dc7764c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83E8 1800 bytes
font_03_sfnt_off00008c76.bin
e59a2aa6c4a03034d106c89be42826f8f356a1175ffb190f42c51275376207c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C76 10864 bytes
font_04_sfnt_off0000b1d8.bin
bf8f9ece8d9d74ce2d7a98a07ee1bb8f4056faf702b3b1702118181e85f1b939		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB1D8 16312 bytes

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