Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1fbec7e7863d743…

MALICIOUS

PDF

53.4 KB Created: 2020-07-29 15:45:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 52695f9cea5fe4e852a25848860552ec SHA-1: 814d0b3c9b9de62b377287c63713ab285cfeb89c SHA-256: b1fbec7e7863d743cd4f8c5481183c6a90291cd962168d79ff4c433c96981724
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a large number of external links, many of which point to Shopify domains hosting PDF files, suggesting a link farm for SEO manipulation or traffic redirection. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is likely used to obscure the final malicious destination. The document body, though heavily obfuscated, contains text related to 'sea waybill pdf', indicating a lure to trick users into clicking the malicious links.

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=sea+waybill+pdf
    • http://files.surahonline.com/uploads/1/3/0/7/130738639/dimafixub-vegonutog-saxesobavivolup-gijajogakiz.pdf
    • http://files.roejendradesigns.com/uploads/1/3/1/4/131406182/pixudekabaz.pdf
    • http://files.finesurfcraftbyandrewwarhurst.com/uploads/1/3/0/8/130814085/serixeru-menozus-rukaxosuni.pdf
    • http://files.tylerdiscoverslife.com/uploads/1/3/1/8/131871622/bopukigigo_pabix.pdf
    • https://cdn.shopify.com/s/files/1/0427/6636/8935/files/refojimoxatobujo.pdf
    • https://cdn.shopify.com/s/files/1/0428/5480/9759/files/padazipenun.pdf
    • https://cdn.shopify.com/s/files/1/0432/6300/0734/files/49174300718.pdf
    • https://cdn.shopify.com/s/files/1/0429/5517/8150/files/6884838660.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/66689816557.pdf
    • https://cdn.shopify.com/s/files/1/0430/7025/9357/files/68904682930.pdf
    • https://cdn.shopify.com/s/files/1/0433/7270/7990/files/35092627847.pdf
    • https://cdn.shopify.com/s/files/1/0429/5249/1159/files/nolowa.pdf
    • https://cdn.shopify.com/s/files/1/0438/6727/5424/files/gowurawoj.pdf
    • https://cdn.shopify.com/s/files/1/0429/2096/8351/files/96886924860.pdf
    • https://cdn.shopify.com/s/files/1/0432/1725/6603/files/65947137517.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_off0000954b.bin
733a04fe5815a90211207b4f33e554e500fa42a1474f220da01d2dc3b5196b34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x954B 4688 bytes
font_01_sfnt_off0000a54b.bin
00a93b7d7c5ae42d2b2f5e7efa30e5a36daab1acd1e94d10a487b61fb2d899eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA54B 10544 bytes

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