Malicious PDF — malware analysis report

Static analysis result for SHA-256 47ad68c508abb254…

MALICIOUS

PDF

44.9 KB Created: 2020-08-29 23:10:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 93d21b4da57d3fd7bc62fdab50d3ae07 SHA-1: 274bef42d237309d3cb5390921bd10a0ec3cafd0 SHA-256: 47ad68c508abb25418c2c1f8965e49981565673b219ab23216a18e67f85c70aa
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to its structure, which includes a large number of embedded links to external PDFs. One of these links, 'https://ttraff.ru/wix?keyword=starbound+incoming+client+packet', points to a known malicious redirector. The primary attack pattern appears to be a link farm, potentially for SEO manipulation or to distribute further malicious content, rather than a direct exploit within the PDF itself.

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=starbound+incoming+client+packet
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/68905528383.pdf
    • https://cdn.shopify.com/s/files/1/0430/7812/3674/files/81950733403.pdf
    • https://cdn.shopify.com/s/files/1/0434/6295/1065/files/emotional_intelligence_2._0_book.pdf
    • https://cdn.shopify.com/s/files/1/0431/3504/1693/files/92042926177.pdf
    • https://cdn.shopify.com/s/files/1/0430/3241/2311/files/60980286356.pdf
    • https://static.usrfiles.com/ugd/d54300_669080c3268f46f1bd9d97057f78c7d5.pdf
    • https://cdn.shopify.com/s/files/1/0437/4790/1592/files/virapese.pdf
    • https://cdn.shopify.com/s/files/1/0430/7927/0561/files/6489159804.pdf
    • https://cdn.shopify.com/s/files/1/0440/0244/3422/files/3357073936.pdf
    • https://static.usrfiles.com/ugd/12f4eb_aea8c6dea5424d679303c8caa5b2066d.pdf
    • https://static.usrfiles.com/ugd/b8c837_a5fdf1e2391744ed851fe6f5b12bb720.pdf
    • https://static.usrfiles.com/ugd/565485_01fc219348f04f839d9895ba3fe16613.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_off00007170.bin
a6497e1f9f598e093ebbe09c1d4d78e4a09751eacb5e3024dbfa730cdcb5d489		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7170 5524 bytes
font_01_sfnt_off00008410.bin
2c9fce3ede81b4b93caa0955571bc8300cae1a56159bc00cbf6210a2adabf110		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8410 10228 bytes

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