PDF malware analysis — malicious · fdbd7b7fd57705b8

MALICIOUS

PDF

40.6 KB Created: 2020-08-03 03:12:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 39981e6cc51ca9e49f93490b64e99277 SHA-1: d048a56eac72b91b9c5d0421ff5e8def1c6c3843 SHA-256: fdbd7b7fd57705b80885f21ad0df9f93a2b79126356d7038f1ba97c72e9c3d68

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF contains a mass external link farm, with one critical link pointing to a known malicious redirector at ttraff.com. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=java+iterate+through+list' and other embedded URLs. The presence of a 'Visible LOLBin command execution instruction' heuristic suggests that the PDF may be designed to execute commands or scripts upon interaction, likely to facilitate the redirection.

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.
Visible LOLBin command execution instruction high SE_LOLBIN_RUN_COMMAND

Document contains instructions or visible command text involving Windows script/execution tools such as PowerShell, mshta, cmd, rundll32, or regsvr32
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=java+iterate+through+list
- http://files.carolinastormhedgehogs.com/uploads/1/3/1/6/131637291/fanipewonosewagafuv.pdf
- http://files.kootneyresorts.net/uploads/1/3/2/6/132681823/d170a8faf99.pdf
- http://files.karyntunks.com/uploads/1/3/2/7/132740204/pimasivam_lupadaka_pebimegawexubav_juwana.pdf
- https://cdn.shopify.com/s/files/1/0434/0501/7255/files/192._168_l_254._254.pdf
- https://cdn.shopify.com/s/files/1/0431/6538/4866/files/12063259238.pdf
- https://cdn.shopify.com/s/files/1/0432/9088/6312/files/vewexomati.pdf
- https://cdn.shopify.com/s/files/1/0437/2935/4917/files/totiw.pdf
- https://cdn.shopify.com/s/files/1/0427/5542/4423/files/19819418634.pdf
- https://cdn.shopify.com/s/files/1/0430/9732/5732/files/memobojuzipibobekiloduva.pdf
- https://cdn.shopify.com/s/files/1/0430/7730/4484/files/sikuni.pdf
- https://cdn.shopify.com/s/files/1/0434/3755/5864/files/sims_4_medium_curly_hair.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tugerivedisabuv.pdf
- https://cdn.shopify.com/s/files/1/0431/1564/3031/files/9365090554.pdf
- https://cdn.shopify.com/s/files/1/0434/1966/4540/files/61332599114.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.

Filename	Kind	Source	Size
`font_00_sfnt_off000057e0.bin` `9aca29354dd64502515cccf920dade8063cf47b05ef7d728e017ad0eb10bbebe`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x57E0	4996 bytes
`font_01_sfnt_off000068df.bin` `dc4f48b68a8980bb052f53674700c02fae53541a5a2a86ac72d7a483f07bfcac`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x68DF	14156 bytes

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