Malicious PDF — malware analysis report

Static analysis result for SHA-256 93c1b9b6aea4fb37…

MALICIOUS

PDF

44.4 KB Created: 2020-09-01 00:18:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6e12adeeafc354ee33e824a3902f8793 SHA-1: 59d5077915d5603a5666bdfdc0268710f95a6618 SHA-256: 93c1b9b6aea4fb376d618f7afcb926754e0fa0a2458f6aabe84680b61d7ce988
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/wix?keyword=food+in+ancient+egypt+worksheet'. This indicates the document's primary purpose is to redirect users to potentially harmful content. The document body, though heavily obfuscated, also contains this URL and numerous other links, suggesting a link farm or SEO poisoning tactic to distribute malicious content. The file is identified as a PDF, and the heuristics strongly suggest a malicious redirector is in play.

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/wix?keyword=food+in+ancient+egypt+worksheet
    • https://static.usrfiles.com/ugd/a01749_a6b1d9a32236456fac2aa081bcff328c.pdf
    • https://static.usrfiles.com/ugd/a4d998_82163fa5f3c24941ae35614c0c471d87.pdf
    • https://static.usrfiles.com/ugd/3aee12_1c3382f707444505a465909daa420f58.pdf
    • https://cdn.shopify.com/s/files/1/0429/1035/1513/files/vodolisi.pdf
    • https://cdn.shopify.com/s/files/1/0438/9679/9384/files/mobizofi.pdf
    • https://cdn.shopify.com/s/files/1/0436/9842/1913/files/guxidojesumumij.pdf
    • https://cdn.shopify.com/s/files/1/0433/5868/3295/files/aswamedham_telugu_full_movie.pdf
    • https://cdn.shopify.com/s/files/1/0430/0609/9605/files/50992238345.pdf
    • https://static.usrfiles.com/ugd/078c79_3ae85512603d49a4b23842988ca2631e.pdf
    • https://static.usrfiles.com/ugd/b8c837_3ea909af08f64bdaa4c5220f14457c2e.pdf
    • https://cdn.shopify.com/s/files/1/0434/7920/3992/files/pepuluxegajak.pdf
    • https://cdn.shopify.com/s/files/1/0433/6363/1272/files/mekaladojijozo.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_off00006f25.bin
8457b817504c54f01b6664b81e41aab6490243739e1063b5ca90638ed47edfbb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F25 5516 bytes
font_01_sfnt_off000081ff.bin
b1c3f7173fedab942fe51e663334975a2673b2aa075672e00a343e0f739ec140		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81FF 10240 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.