Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3f6f70a2041d812…

MALICIOUS

PDF

43.5 KB Created: 2020-08-23 07:02:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7de700e8f29ccc4426009ac230a553b9 SHA-1: d549639dca58006452cb5922929e3b6d5cf20c0b SHA-256: e3f6f70a2041d812973233b88b56e6269ae81dc6cadcf09a4d44bcd0662272b2
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic indicating it's a malicious redirector link, pointing to `ttraff.ru`. The document body also contains this URL, disguised as a 'Symantec dlp admin guide 15. 5'. This suggests a social engineering lure to trick the user into clicking the link, which then redirects to malicious infrastructure. The file also contains a PDF link farm heuristic, with many links hosted on `cdn.shopify.com`, one of which is `lovul.pdf`.

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=symantec+dlp+admin+guide+15.+5
    • http://files.pursuingthepursuer.org/uploads/1/3/1/3/131398542/8383398.pdf
    • https://cdn.shopify.com/s/files/1/0435/4136/4890/files/lovul.pdf
    • https://cdn.shopify.com/s/files/1/0438/4745/0789/files/22359209316.pdf
    • https://cdn.shopify.com/s/files/1/0437/6041/8970/files/rusidejokito.pdf
    • https://cdn.shopify.com/s/files/1/0431/2937/2832/files/lakiladagoxo.pdf
    • https://cdn.shopify.com/s/files/1/0437/6087/7729/files/restaurant_franchise_operations_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/2911/8627/files/gifalawoxobikozulomeb.pdf
    • https://cdn.shopify.com/s/files/1/0438/8506/8456/files/rosom.pdf
    • https://cdn.shopify.com/s/files/1/0430/7510/9018/files/24856252503.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_off0000573b.bin
0d073966f95095c71eb559e3cac6a535e0daded8a806c18e6734edce72d5764a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x573B 5304 bytes
font_01_sfnt_off0000693b.bin
f44434bef39c9e04eaeb05879662f606a8212eaf0cbfea4db9069e39cfd3e358		 pdf-font-stream PDF embedded font (sfnt) at offset 0x693B 13120 bytes
font_02_sfnt_off00009364.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9364 4324 bytes

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