Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd432bb38d403006…

MALICIOUS

PDF

43.2 KB Created: 2020-08-09 08:07:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b7083a509890dce69c0112e503e7b913 SHA-1: edf6289fc58fa5b7056004533c6b420f24f57914 SHA-256: dd432bb38d4030063aaa25f75cfb0064b462a9ad479abf88355c22302ab8475a
150 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is disguised as a legitimate resource. The document body, though heavily obfuscated, contains the same URL and references to other PDFs hosted on Shopify. This suggests a phishing or scam attempt to redirect users to malicious content. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm designed to obscure the ultimate destination.

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.cc/pify?keyword=advertising+vocabulary+list+pdf
    • http://fadur.solidrockmasons.com/uploads/1/3/1/0/131070146/xutatuf-vuzuforujuvu.pdf
    • http://vamow.shepherdssecurity.com/uploads/1/3/2/7/132740214/1691683.pdf
    • http://files.jillianburt.com/uploads/1/3/1/4/131437299/buvorona.pdf
    • http://lotipijoj.tietzepark.org/uploads/1/3/0/8/130873876/7181569263c.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/69296453687.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/85947343199.pdf
    • https://cdn.shopify.com/s/files/1/0433/8722/4214/files/38856910648.pdf
    • https://cdn.shopify.com/s/files/1/0434/1730/5240/files/garafiwuguv.pdf
    • https://cdn.shopify.com/s/files/1/0431/7803/3313/files/61150325945.pdf
    • https://cdn.shopify.com/s/files/1/0429/1087/5815/files/17609516677.pdf
    • https://cdn.shopify.com/s/files/1/0436/5749/4686/files/raluvukamudoxuwilupo.pdf
    • https://cdn.shopify.com/s/files/1/0429/3551/7337/files/11828766326.pdf
    • https://cdn.shopify.com/s/files/1/0430/4168/5665/files/72161575454.pdf
    • https://cdn.shopify.com/s/files/1/0431/8127/7342/files/firuzojixeseluros.pdf
    • https://cdn.shopify.com/s/files/1/0431/9484/3298/files/lujekeborokivod.pdf
    • https://cdn.shopify.com/s/files/1/0440/3340/9174/files/vesoma.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_off00006b05.bin
33a230019ee0514af1d643027aa08526caa847cef04e18f7f2d10c65f22490b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B05 5616 bytes
font_01_sfnt_off00007e3c.bin
9399886ace67bef40b342955f2802031ab1af99a04e23104a30c1f084ed24626		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E3C 9908 bytes

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