Malicious PDF — malware analysis report

Static analysis result for SHA-256 3eda23f0d3b628be…

MALICIOUS

PDF

128.0 KB Created: 2020-08-28 23:52:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0bde1440b26c5abbf0fea5dc75b98f3c SHA-1: e430665c34ea2cb8b0c92bf5fbbfb533446c3a86 SHA-256: 3eda23f0d3b628bed50e241a5101424c875d75ab88f526bf903e7fd288a13a1b
128 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with a critical heuristic identifying a link to a known malicious redirector at 'https://ttraff.ru/wix?keyword=the+thundermans+episodes'. Another critical heuristic flags the PDF as a link farm, indicating a large number of external links, many hosted on Shopify. The document body, though heavily obfuscated, also contains the malicious URL. This suggests the primary purpose is to redirect users to malicious infrastructure, likely for further exploitation or to serve malicious content.

Heuristics 4

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=the+thundermans+episodes
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/70339383958.pdf
    • https://cdn.shopify.com/s/files/1/0431/6237/0210/files/givurajewereg.pdf
    • https://cdn.shopify.com/s/files/1/0463/3486/9661/files/2015_ford_f150_platinum.pdf
    • https://cdn.shopify.com/s/files/1/0432/2030/4034/files/fasugogagopedumezigo.pdf
    • https://cdn.shopify.com/s/files/1/0437/7129/7943/files/61856057550.pdf
    • https://cdn.shopify.com/s/files/1/0435/9572/7007/files/3134673148.pdf
    • https://static.usrfiles.com/ugd/b8c837_719d18d9966241149a2088d927488284.pdf
    • https://static.usrfiles.com/ugd/b8c837_e21ac01d42b1456f88727182eb37006b.pdf
    • https://static.usrfiles.com/ugd/b8c837_4e146d0eb4fd48cd9c641ffc48614c7a.pdf
    • https://static.usrfiles.com/ugd/b8c837_f123701d040f4e1290fc6ee77226c2f6.pdf
    • https://static.usrfiles.com/ugd/b8c837_f0df0ede68d24257857ef5e4911b38e9.pdf
    • https://static.usrfiles.com/ugd/b8c837_1786e8a9697c40ec83e66de10965cb1e.pdf
    • https://static.usrfiles.com/ugd/b8c837_b6e368138d1145d0b65419766879260b.pdf
    • https://static.usrfiles.com/ugd/b8c837_601bd766f9cf48d49a9be0e25766fe9d.pdf
    • https://static.usrfiles.com/ugd/b8c837_bc759c359be643d1a5467d6609002bdf.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
font_00_sfnt_off0001ad0f.bin
6fde26add7ab60b6d586bac89ccb1ca1acac9952151c65c5436c10928b599cff
pdf-font-stream PDF embedded font (sfnt) at offset 0x1AD0F 5000 bytes
font_01_sfnt_off0001bdd2.bin
09842c1a66dbd7e2b4ec711c30394858ed466ad1a5998c6249a21300fcf9f14f
pdf-font-stream PDF embedded font (sfnt) at offset 0x1BDD2 11892 bytes
font_02_sfnt_off0001e45d.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
pdf-font-stream PDF embedded font (sfnt) at offset 0x1E45D 4324 bytes