Malicious PDF — malware analysis report

Static analysis result for SHA-256 a40d100e5d955b79…

MALICIOUS

PDF

47.3 KB Created: 2020-08-18 18:39:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7a023742baa28313afc3a7a48d8a58e9 SHA-1: 62836305852e2ca6ce412d3dfc78924f629f10c4 SHA-256: a40d100e5d955b79c83459c5b5e570efbb7e4f73afab535cf93c113771b5630c
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying a malicious redirector. The document body, though heavily obfuscated, contains text related to 'Slay the Spire' and the malicious URL, suggesting a lure. The primary malicious URL is https://ttraff.ru/pify?keyword=slay+the+spire+heart+guide, which is likely used to redirect the user to a further malicious destination.

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=slay+the+spire+heart+guide
    • http://files.corinnegarcia.com/uploads/1/3/2/7/132712332/wirinitiza.pdf
    • http://sedilive.riotbread.com/uploads/1/3/0/7/130776257/fijapofobuk_gutinatapa.pdf
    • https://cdn.shopify.com/s/files/1/0430/7278/2489/files/36269644949.pdf
    • https://cdn.shopify.com/s/files/1/0432/1263/6322/files/flipping_table_emoji.pdf
    • https://cdn.shopify.com/s/files/1/0437/9348/1885/files/apcob_notification_2020.pdf
    • https://cdn.shopify.com/s/files/1/0434/5767/5421/files/konuzajazutefateran.pdf
    • https://cdn.shopify.com/s/files/1/0448/0850/3456/files/31205858074.pdf
    • https://cdn.shopify.com/s/files/1/0431/8507/8434/files/19561998360.pdf
    • https://cdn.shopify.com/s/files/1/0430/7727/1703/files/zabakazuvegaliboburajil.pdf
    • https://cdn.shopify.com/s/files/1/0428/2325/4179/files/lufonugifigivezedavup.pdf
    • https://cdn.shopify.com/s/files/1/0437/2522/6133/files/172300497.pdf
    • https://cdn.shopify.com/s/files/1/0436/9963/4330/files/kexafam.pdf
    • https://cdn.shopify.com/s/files/1/0429/2437/6227/files/qcm_systeme_digestif.pdf
    • https://cdn.shopify.com/s/files/1/0432/2312/2077/files/65349580322.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_off00006d77.bin
83664ac6157574ca76cec57dab3c60118fa8ba7bbb017f5a182f3d49debf45f8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D77 5092 bytes
font_01_sfnt_off00007ed1.bin
749db3730869f6850a983133e2199eff542596331e03bba5afd29a9cc91997a2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7ED1 10256 bytes
font_02_sfnt_off0000a1e9.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA1E9 4324 bytes

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