Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f7acea2a63ab809…

MALICIOUS

PDF

53.6 KB Created: 2020-08-06 10:59:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5ed88a9fce6bd18094664d07f7b26759 SHA-1: 4c07a19698d07b9bb8eb2f7159daf0b402c8e3a8 SHA-256: 1f7acea2a63ab8091f057cdedad145ae69f9e27030b8a805e54356c1345d25fc
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous links, with a critical heuristic firing for a malicious redirector. The primary malicious URL is 'https://ttraff.cc/pify?keyword=swing+trading+books+pdf', which is presented as a link to a PDF about trading books. This URL redirects to other benign Shopify links, likely as part of a link farm or SEO manipulation to obscure the malicious destination. The document body is heavily obfuscated but contains the malicious URL and several benign Shopify URLs.

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=swing+trading+books+pdf
    • http://files.animasriverdays.com/uploads/1/3/1/4/131453718/6063301.pdf
    • http://files.peterandrewsoam.com/uploads/1/3/0/8/130874554/ba373da.pdf
    • http://dezex.fbcmtsterling.com/uploads/1/3/1/1/131164312/6151c29.pdf
    • http://files.summitannarbor.com/uploads/1/3/2/6/132680827/xijawerijowino.pdf
    • https://cdn.shopify.com/s/files/1/0433/9934/8389/files/darelifirov.pdf
    • https://cdn.shopify.com/s/files/1/0433/0166/6969/files/regofinudutewexijumonitog.pdf
    • https://cdn.shopify.com/s/files/1/0431/7157/8024/files/83425059185.pdf
    • https://cdn.shopify.com/s/files/1/0440/2629/8533/files/robaveximo.pdf
    • https://cdn.shopify.com/s/files/1/0429/5704/5916/files/31466959621.pdf
    • https://cdn.shopify.com/s/files/1/0429/9476/1877/files/wexurosodimakukex.pdf
    • https://cdn.shopify.com/s/files/1/0433/0677/8777/files/52239692531.pdf
    • https://cdn.shopify.com/s/files/1/0436/4340/4441/files/mezujomedesumogijuka.pdf
    • https://cdn.shopify.com/s/files/1/0432/7079/9516/files/fiwizopidoda.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32829552166.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dagezaluvonanapukinuwit.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007da9.bin
74717455c4f1be27e361edf1f1abd1647878ed828a5c3d733911a89f2cfb4a75		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DA9 5244 bytes
font_01_sfnt_off00008f80.bin
daad3f347a4f42f432ee9983e619a7c063e36761dba5934b469418034847e28e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F80 1800 bytes
font_02_sfnt_off0000980e.bin
de09076f43378073ebb9cde84ae10f778bef8d659578b554497eadd394e9594b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x980E 10172 bytes
font_03_sfnt_off0000bab9.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBAB9 4324 bytes

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