Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebcfedf10240ef98…

MALICIOUS

PDF

45.2 KB Created: 2020-07-31 02:04:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 52ab0bbb1e0b706fc912a366a0d19c42 SHA-1: c68a5e3282bd625e2385ec23e19c818d05c99001 SHA-256: ebcfedf10240ef98c761959f752347ebd3f19567960f59d3c5a693abb5270e63
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF file contains numerous embedded links, with a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK indicating a link to a known malicious redirector. Another critical heuristic, PDF_SEO_LINK_FARM, highlights the presence of a large number of external PDF links, suggesting an attempt to manipulate search engine results or direct users to malicious content. The primary malicious URL identified is ttraff.ru, which is used in conjunction with keywords related to financial documents.

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/pify?keyword=holding+company+accounts+and+consolidated+balance+sheet+pdf
    • http://files.compressionsllc.com/uploads/1/3/1/6/131637325/miwukox_majevexowenewi_xolizijilaleru_rumezofato.pdf
    • http://files.theeblacksocialite.com/uploads/1/3/0/7/130738554/6c671ad191b3b2.pdf
    • http://files.supportedimmersion.com/uploads/1/3/0/8/130813095/zorovidoxafusu.pdf
    • http://files.woodlandstuition.com/uploads/1/3/0/7/130775952/wekozivi.pdf
    • http://files.theebla
    • https://cdn.shopify.com/s/files/1/0430/6377/1293/files/24848235299.pdf
    • https://cdn.shopify.com/s/files/1/0430/8307/1650/files/fomubenipoburored.pdf
    • https://cdn.shopify.com/s/files/1/0431/9684/2142/files/55895971263.pdf
    • https://cdn.shopify.com/s/files/1/0431/5322/7936/files/mawujuba.pdf
    • https://cdn.shopify.com/s/files/1/0429/8499/7025/files/51093918937.pdf
    • https://cdn.shopify.com/s/files/1/0441/0081/2952/files/kivubusizukosenew.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/26965864763.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bodadajigewodozisidezufe.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sitadekekogog.pdf
    • https://cdn.shopify.com/s/files/1/0430/6314/8706/files/lagatiju.pdf
    • https://cdn.shopify.com/s/files/1/0431/2884/8538/files/fulivopimolowedovij.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_off000071de.bin
0c12e4e7ed029fb1189cbc629838c0982bcb0669ce1b59d2dab67b2cc592bf1b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71DE 5556 bytes
font_01_sfnt_off00008496.bin
d9adca0bcffde750da0474f27b880b8ff2aa0ccb94230d7d5325eed1b720e277		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8496 10120 bytes

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