Malicious PDF — malware analysis report

Static analysis result for SHA-256 b59400611d6763ad…

MALICIOUS

PDF

57.6 KB Created: 2020-09-04 01:23:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8be6c45a7162b1e3b2f13dda5e7ce98c SHA-1: d4f680c6a9d5f8715bbfe3f5a66aff84128ed825 SHA-256: b59400611d6763adad0b9bfde08d33215e9fbe3e3130a1c5c9df6a95bedd8752
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that is also flagged as a malicious redirector. This suggests the primary purpose is to redirect the user to a malicious site, likely for further exploitation or credential harvesting.

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.me/pify?keyword=plant+cell+and+tissue+types+worksheet+answers
    • https://cdn.shopify.com/s/files/1/0433/7981/8661/files/60342716437.pdf
    • https://cdn.shopify.com/s/files/1/0437/8217/6920/files/sobuvoru.pdf
    • https://cdn.shopify.com/s/files/1/0433/3764/6245/files/jobiwirimozemovu.pdf
    • https://cdn.shopify.com/s/files/1/0432/8436/5468/files/1237331039.pdf
    • https://cdn.shopify.com/s/files/1/0462/7372/4576/files/rokinuju.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vazakiliduvapi.pdf
    • https://cdn.shopify.com/s/files/1/0434/4152/0805/files/74752021161.pdf
    • https://cdn.shopify.com/s/files/1/0437/8768/1954/files/53774776676.pdf
    • https://static.usrfiles.com/ugd/cc10e7_33f4fe9caf244ee5b95de3df3f9ac4aa.pdf
    • https://static.usrfiles.com/ugd/353d00_d9321e0e0bc74ca988139620262f3498.pdf
    • https://static.usrfiles.com/ugd/80c1db_5138b2897687434f881d4d207df69254.pdf
    • https://static.usrfiles.com/ugd/217d68_7bfe656970c749ebbb5d332d9620ec33.pdf
    • https://cdn.shopify.com/s/files/1/0434/4204/5090/files/98649768695.pdf
    • https://cdn.shopify.com/s/files/1/0460/3576/3364/files/famulolunuxilesof.pdf
    • https://cdn.shopify.com/s/files/1/0435/1596/9688/files/45037320417.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_off0000a1f4.bin
9653ceea6c7ae4d1488a72f2d26f7aff7aa4f88fc7f161a754490ca4939dcc87		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA1F4 5420 bytes
font_01_sfnt_off0000b473.bin
e81426676a64e4f87e7f24a830ef47662311b2cc56ff1a9375b1e04bcfa1946e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB473 10684 bytes

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