Malicious PDF — malware analysis report

Static analysis result for SHA-256 c990199d7a69a085…

MALICIOUS

PDF

39.7 KB Created: 2020-08-31 03:14:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5fca6a68dc562313f444fb902cd5fed4 SHA-1: fdec7be1bcdfcbb16ecac559cc354d8945701e78 SHA-256: c990199d7a69a08550c8326104d81bb238e43bc0c5561aa239e273fe668ae03f
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one heuristic specifically identifying it as a PDF SEO link farm. The primary redirector link, https://ttraff.ru/wix?keyword=swtor+powertech+or+mercenary, is flagged as malicious. This suggests the document's purpose is to manipulate search engine results or redirect users to potentially harmful content, rather than delivering a direct payload.

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=swtor+powertech+or+mercenary
    • https://cdn.shopify.com/s/files/1/0437/8935/3117/files/evergreen_yebba_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0436/5654/4409/files/keputavunanesogulimovu.pdf
    • https://cdn.shopify.com/s/files/1/0432/1614/2497/files/vamuwawutelidegosamajokum.pdf
    • https://cdn.shopify.com/s/files/1/0433/9764/4449/files/osrs_beginner_clue_scroll_answers.pdf
    • https://static.usrfiles.com/ugd/65b209_142b90a096ff48b6a9adb137bf4be835.pdf
    • https://static.usrfiles.com/ugd/b8c837_0a498d95f1c549b0a84515fce544a631.pdf
    • https://static.usrfiles.com/ugd/e745be_221b44012cce4e7c873e13e5eecea0d7.pdf
    • https://static.usrfiles.com/ugd/269bb8_b68281c38f834214ac979d630462dab0.pdf
    • https://static.usrfiles.com/ugd/b8c837_0e60ee4fc6f5484e9be09e64f796be54.pdf
    • https://static.usrfiles.com/ugd/b8c837_246c0046a4ab40f8b875618f3232a841.pdf
    • https://static.usrfiles.com/ugd/b8c837_5fc7e1d8fd234d8a8be40a3057efde74.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_off00005d9b.bin
dccbc45b185756a710adb21c2cdb00266db14618e0da847b9050c7f08ba15465		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D9B 5260 bytes
font_01_sfnt_off00006f68.bin
8e4df6118e65b5f4fb4eb3833b47a4ece98dbacb78dfd5683e50e1762de56bed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F68 10288 bytes

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