Malicious PDF — malware analysis report

Static analysis result for SHA-256 9179e7cdc3af8ce6…

MALICIOUS

PDF

80.0 KB Created: 2020-08-23 01:05:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5869ec046d8a4b11d0a5502ddbdb4736 SHA-1: 50c3993c0fe0f8c1ce3956295275e41a2f366b4e SHA-256: 9179e7cdc3af8ce655fd92583174403a07380998fc87adfc01ffc6a960e3f937
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a mass of external links, many of which are hosted on Shopify and appear to be SEO-optimized to appear benign. However, one embedded link, 'https://ttraff.ru/pify?keyword=free+english+dictionary+with+audio+pronunciation', is flagged as a known malicious redirector. The document body, though heavily obfuscated, contains this same URL, suggesting the primary intent is to redirect users to malicious infrastructure via a deceptive lure.

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=free+english+dictionary+with+audio+pronunciation
    • http://files.gigglesngreetings.com/uploads/1/3/1/6/131637570/6945477.pdf
    • http://vujesofel.believarexic.com/uploads/1/3/0/8/130873782/733f83.pdf
    • http://files.nc-zeitgeist-foundation.org/uploads/1/3/0/7/130740465/5849111.pdf
    • http://mapul.youngsingersacademy.com/uploads/1/3/1/3/131379362/825837.pdf
    • https://cdn.shopify.com/s/files/1/0428/2833/3222/files/pilegipirodebabewexak.pdf
    • https://cdn.shopify.com/s/files/1/0431/6112/5013/files/jokukisupa.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/65545430121.pdf
    • https://cdn.shopify.com/s/files/1/0428/3321/5654/files/winchester_model_670.pdf
    • https://cdn.shopify.com/s/files/1/0431/7318/3643/files/beporir.pdf
    • https://cdn.shopify.com/s/files/1/0432/0201/9487/files/mijixafofuvopedar.pdf
    • https://cdn.shopify.com/s/files/1/0429/3640/2079/files/kikafotivolugalazujelira.pdf
    • https://cdn.shopify.com/s/files/1/0433/0654/9406/files/15228479865.pdf
    • https://cdn.shopify.com/s/files/1/0430/8421/8532/files/lutuluvazisabaf.pdf
    • https://cdn.shopify.com/s/files/1/0434/0006/9270/files/81982001682.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 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_007_off0000f3bb.bin
d3cad66a05f961149fa27c02fa426dae4ff27d8ff63aeef35993f89d82892e2c		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xF3BB 22796 bytes
font_00_sfnt_off000069e9.bin
9b081fec5b92cef5ccc84295a9e3059de9310687e15d112fee248c7c574c43ae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69E9 11968 bytes
font_01_sfnt_off000091ed.bin
9cb3e0ccdce95f7016250e4dccaff550d6c49a36b67253fe3d425be1428e75e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x91ED 5484 bytes
font_02_sfnt_off0000a496.bin
9ede781cb7ccab3648efc5670174d8534c93780dbf2e10a4c53ca527f9393021		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA496 9576 bytes
font_03_sfnt_off0000bf87.bin
ee62d3a20f1254427eb2d1ec460dd7561ad079b574d291dd6152ad407b8104e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBF87 17120 bytes
font_05_sfnt_off00011bef.bin
4b7df8fa8d5fb6e1823778056d344a63deda8bff7708be3c3c7fbf15f8b6b15f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11BEF 5512 bytes

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