Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7fdc481e46891c6…

MALICIOUS

PDF

42.0 KB Created: 2020-08-20 01:55:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 50424afaaaaec21403a554965c36e732 SHA-1: 209df7651656656442a1b1b3b88a86793345b1a8 SHA-256: e7fdc481e46891c6cf06bff5dd9162a0c41d83e7c9e4efc90f0190fddee5bd4c
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link and a link farm. The embedded URL points to a redirector that uses a game keyword in its URL, suggesting a lure. The document body, though heavily corrupted, contains a reference to the same redirector URL. The primary malicious IOC is the redirector URL, which likely leads to further malicious content.

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.cc/pify?keyword=battlelands+royale+pc+apk
    • http://files.fillmorebulldogbands.org/uploads/1/3/0/7/130776043/moxonu.pdf
    • https://cdn.shopify.com/s/files/1/0434/7451/8180/files/zejomo.pdf
    • https://cdn.shopify.com/s/files/1/0431/1370/9722/files/negofizefolizixazebe.pdf
    • https://cdn.shopify.com/s/files/1/0429/9282/8579/files/27990592466.pdf
    • https://cdn.shopify.com/s/files/1/0436/7558/2617/files/4387073314.pdf
    • https://cdn.shopify.com/s/files/1/0431/4651/0504/files/fadajigozozotabisuze.pdf
    • https://cdn.shopify.com/s/files/1/0433/3407/4523/files/fanerunefifeb.pdf
    • https://cdn.shopify.com/s/files/1/0435/0246/9285/files/tusolekisufid.pdf
    • https://cdn.shopify.com/s/files/1/0428/6555/7671/files/zolen.pdf
    • https://cdn.shopify.com/s/files/1/0438/2749/5072/files/anthony_giddens_sociologia_portugues.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_off00005a13.bin
55e07ad438dd84001ddc8f801af2c7da26f403aa153d68a24ba47cc4e2e90596		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A13 5024 bytes
font_01_sfnt_off00006b38.bin
3bf5fefc141456ca11f2b7431428de0d262f5646fb105cf857056122d1418a0a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B38 10060 bytes
font_02_sfnt_off00008da9.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8DA9 4324 bytes

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