Malicious PDF — malware analysis report

Static analysis result for SHA-256 fab2e457c6e4b648…

MALICIOUS

PDF

39.3 KB Created: 2020-08-21 17:03:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8f4d4c593ed561b576df27399e309436 SHA-1: 4a2cee33096aff56429006f3f683cbc1413fda30 SHA-256: fab2e457c6e4b6489f68851e52d72d8d0a2b812c6823ff73de9606995cd8d433
120 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=mongodb+aggregate+count+performance', which is flagged as malicious. The presence of numerous external PDF links, many hosted on cdn.shopify.com, suggests a link farm or a method to distribute further malicious content.

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=mongodb+aggregate+count+performance
    • http://mojuxep.tombellfire.com/uploads/1/3/0/7/130739602/118670.pdf
    • http://files.sueannecelebrant.com/uploads/1/3/1/4/131437351/26ff42c.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/welilavuruwad.pdf
    • https://cdn.shopify.com/s/files/1/0436/3013/3406/files/68132924885.pdf
    • https://cdn.shopify.com/s/files/1/0433/8555/3061/files/99726395453.pdf
    • https://cdn.shopify.com/s/files/1/0435/5378/3957/files/26421456157.pdf
    • https://cdn.shopify.com/s/files/1/0431/9150/0961/files/widavewe.pdf
    • https://cdn.shopify.com/s/files/1/0432/0346/1283/files/34648080039.pdf
    • https://cdn.shopify.com/s/files/1/0429/9295/9642/files/pesotulo.pdf
    • https://cdn.shopify.com/s/files/1/0450/9148/7909/files/wordly_wise_book_6_lesson_20.pdf
    • https://cdn.shopify.com/s/files/1/0430/1655/2605/files/male_gametes_in_angiosperms_are_formed_by.pdf
    • https://cdn.shopify.com/s/files/1/0434/5187/5481/files/54586299052.pdf
    • https://cdn.shopify.com/s/files/1/0435/1492/1112/files/29084655516.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_off00005aec.bin
c1722afe36853ae2a258de5942619e8404ca10b9cd1742ed7b50fa7d531de149		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AEC 5408 bytes
font_01_sfnt_off00006d48.bin
901c05552a5e431297b0cc6302da372cf180305a8b6fc3873b7969d4b1299414		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D48 10464 bytes

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