Malicious PDF — malware analysis report

Static analysis result for SHA-256 3effdca6f89339a5…

MALICIOUS

PDF

62.6 KB Created: 2020-08-17 05:41:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6151233536efbd65dec20e7f659e1456 SHA-1: 3472e0b6658a45ca281572089a1b7d7dc3a8c365 SHA-256: 3effdca6f89339a54e449d7cbd09e60fac52bfefc32886c02aef5976d3c34db7
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a critical heuristic firing indicating a link farm pointing to a malicious redirector. The primary malicious URL identified is https://ttraff.com/pify?keyword=chastiefol+todas+sus+formas. The document body, though heavily obfuscated, also contains this URL and other PDF links hosted on Shopify and various other domains, suggesting a coordinated effort to distribute malicious content. No scripts were extracted, but the structure strongly implies a phishing or redirection attack.

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=chastiefol+todas+sus+formas
    • http://vozupebe.liguangyi.com/uploads/1/3/0/7/130776611/b62346027d7.pdf
    • http://files.sarahgoetzskincare.com/uploads/1/3/0/8/130874482/joxesijijaxuzi.pdf
    • http://nidojena.audrey4care.org/uploads/1/3/1/4/131483167/10024d7c80f2.pdf
    • http://files.urbanhealthgroupllc.com/uploads/1/3/0/7/130739340/pakosopejorezemi.pdf
    • https://cdn.shopify.com/s/files/1/0430/7946/7170/files/24249535814.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/58829080427.pdf
    • https://cdn.shopify.com/s/files/1/0433/0664/7717/files/zerapozodaluxa.pdf
    • https://cdn.shopify.com/s/files/1/0435/2278/5444/files/26021168063.pdf
    • https://cdn.shopify.com/s/files/1/0435/1324/9946/files/64553603325.pdf
    • https://cdn.shopify.com/s/files/1/0446/2444/5603/files/jatetawefovasijirupe.pdf
    • https://cdn.shopify.com/s/files/1/0428/8937/9996/files/kebimotapimigoxi.pdf
    • https://cdn.shopify.com/s/files/1/0435/2229/3920/files/chrome_storage_sync.pdf
    • https://cdn.shopify.com/s/files/1/0439/0040/3880/files/zopotujadevi.pdf
    • https://cdn.shopify.com/s/files/1/0434/3001/9229/files/65789346472.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00007b93.bin
6bfb4ebde942db9ae04396381afd2be8b82244954137b440c9aa4da2f1c25ba9		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x7B93 18964 bytes
font_01_sfnt_off0000b7d2.bin
f8b053c1bfb1f41c8175ce6782d61460bf14cc5587b155de7c002003bd323a0c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB7D2 5052 bytes
font_02_sfnt_off0000c8cf.bin
6dba418c6f8a308ae60c063f629db646e6a265f89b14357ecd8ddaf3072b79b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC8CF 11228 bytes

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