Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3227e76c142fb58…

MALICIOUS

PDF

53.7 KB Created: 2020-08-02 09:34:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9a7662f4ad5801674c88af0c46ac3a5d SHA-1: 5890af2d25260181a42ab6462eb95bc80aeea321 SHA-256: d3227e76c142fb58c00decad893a3d0786598ba26d2a4cfb3152bdee00a1a4a1
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external PDFs hosted on Shopify. One critical heuristic indicates a malicious redirector link to 'ttraff.com'. The document body text, though partially corrupted, contains the same lure text and the malicious URL, suggesting the primary purpose is to redirect users to malicious infrastructure via a deceptive link.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.com/pify?keyword=albert+haynesworth+net+worth
    • http://files.decaturpi.org/uploads/1/3/0/7/130739163/nixen_busuf.pdf
    • http://files.spiritmountainroasting.com/uploads/1/3/0/8/130814515/vekunapuloxeluk-xumejikimibo-mapotazile.pdf
    • http://files.organicritualbeauty.org/uploads/1/3/1/3/131384374/bupub.pdf
    • http://files.talkingwitht.com/uploads/1/3/0/8/130873826/8976710.pdf
    • http://files.mylovableschnauzers.com/uploads/1/3/0/9/130969742/venafepul.pdf
    • https://cdn.shopify.com/s/files/1/0431/2537/5125/files/xegabiz.pdf
    • https://cdn.shopify.com/s/files/1/0432/3622/9277/files/tojot.pdf
    • https://cdn.shopify.com/s/files/1/0436/8865/7049/files/17465716377.pdf
    • https://cdn.shopify.com/s/files/1/0433/3872/7589/files/40833936961.pdf
    • https://cdn.shopify.com/s/files/1/0439/0522/0763/files/kokinibeninofug.pdf
    • https://cdn.shopify.com/s/files/1/0432/5625/0525/files/3791656720.pdf
    • https://cdn.shopify.com/s/files/1/0429/9803/8679/files/57511260365.pdf
    • https://cdn.shopify.com/s/files/1/0435/5627/4339/files/what_is_a._db_file.pdf
    • https://cdn.shopify.com/s/files/1/0431/9258/2293/files/pevuli.pdf
    • https://cdn.shopify.com/s/files/1/0435/6007/5427/files/domanatol.pdf
    • https://cdn.shopify.com/s/files/1/0427/5650/5756/files/pokar.pdf
    • https://cdn.shopify.com/s/files/1/0433/6618/7176/files/personal_finance_jeff_madura.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_off000089c3.bin
0580818bd515de0aecb33c04ddf6e7f1336b44e2ef270f5d12238576cfbf6a50		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89C3 5096 bytes
font_01_sfnt_off00009b24.bin
393b5d9d0b6d4624609144e1564c81217b1f16f94fe45ffd88068197ae8cf104		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9B24 15148 bytes

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