Malicious PDF — malware analysis report

Static analysis result for SHA-256 c913eecddd6bcd21…

MALICIOUS

PDF

68.7 KB Created: 2020-08-21 08:01:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1cec1e2c2cc9db3e8ee0e9bb16bacb87 SHA-1: 3de5f9f2ca793ac8cd17275686a82c619e21e2af SHA-256: c913eecddd6bcd21c87e54771c30f2a2dda39869a8c265050b53c69013cb3b10
128 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to Shopify domains, suggesting a link farm for SEO manipulation. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is also present in the document body. This indicates the PDF is designed to redirect users to malicious infrastructure, likely for phishing or malware distribution.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.com/pify?keyword=android+studio+adb+integration
    • http://files.sjetr.org/uploads/1/3/1/4/131406286/166345.pdf
    • http://pirur.marthomawashington.com/uploads/1/3/1/4/131437792/9214208.pdf
    • http://files.runamokfarm.com/uploads/1/3/0/9/130969607/bobavejuwo.pdf
    • http://files.alliesonthejourney.net/uploads/1/3/2/3/132302963/4970213.pdf
    • http://files.delhicommunitychurch.com/uploads/1/3/1/8/131856956/juxajene-javoxogofiw-badujikegaliz-sopokafag.pdf
    • https://cdn.shopify.com/s/files/1/0431/6404/1373/files/gosavofakatorelijusolix.pdf
    • https://cdn.shopify.com/s/files/1/0433/1044/8798/files/11762038386.pdf
    • https://cdn.shopify.com/s/files/1/0428/6211/7020/files/ion_creanga_capra_cu_trei_iezi.pdf
    • https://cdn.shopify.com/s/files/1/0431/2052/5469/files/zovot.pdf
    • https://cdn.shopify.com/s/files/1/0434/1284/8790/files/nidoxefomidutafisexona.pdf
    • https://cdn.shopify.com/s/files/1/0433/5173/6471/files/senaradazomepavo.pdf
    • https://cdn.shopify.com/s/files/1/0428/2171/4079/files/autohotkey_zip_file.pdf
    • https://cdn.shopify.com/s/files/1/0433/8073/6156/files/rosonezivazanujoxomidap.pdf
    • https://cdn.shopify.com/s/files/1/0427/5575/2103/files/39885135330.pdf
    • https://cdn.shopify.com/s/files/1/0430/2854/5693/files/how_to_analyze_large_data_sets_in_excel.pdf
    • https://cdn.shopify.com/s/files/1/0433/1313/5774/files/29603663232.pdf
    • https://cdn.shopify.com/s/files/1/0429/6700/7386/files/writing_task_2_download.pdf
    • https://cdn.shopify.com/s/files/1/0436/0008/5149/files/esl_beginner_conversation_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kawovuk.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_off0000bc21.bin
9f1ace246a5aa26ec2307975dfe4851b3d002e981d165e77f06a00269888dbde		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBC21 4972 bytes
font_01_sfnt_off0000cd08.bin
2704bede6c9e90d67e92f71fffb24216cb058ddfa4088648827d604e78a0ff3c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCD08 13288 bytes
font_02_sfnt_off0000f75b.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF75B 4324 bytes

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