PDF malware analysis — malicious · 51f0a58ac0e753ab

MALICIOUS

PDF

44.3 KB Created: 2020-08-03 11:08:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 433e5d5efa3155986d6f72155d4d160f SHA-1: 606b8cad53bd01de8a04d5eff3078c9f7da2f9b3 SHA-256: 51f0a58ac0e753abe3d3866a5570749d592068cdd829a62df4bcfcc357aee42e

120 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF contains a significant number of embedded links, with at least one pointing to a known malicious redirector. The document body text, though partially corrupted, includes the URL 'https://ttraff.ru/pify?keyword=combine+powerpoint+files', suggesting a lure to combine files, which then redirects to malicious infrastructure. The presence of a large link farm further supports the malicious intent of distributing traffic to potentially harmful sites.

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.ru/pify?keyword=combine+powerpoint+files
- http://files.loriblaylock.com/uploads/1/3/2/6/132681617/vuxajapo-lopalekititinek-xurimidujeri-mopexal.pdf
- http://files.thefirmuk.com/uploads/1/3/0/7/130738632/8b21401bc1b39.pdf
- http://files.crossingcultures.net/uploads/1/3/1/8/131858540/fesibobasofog.pdf
- http://files.kerryfrances.com/uploads/1/3/1/6/131606603/fajege.pdf
- https://cdn.shopify.com/s/files/1/0432/2839/7727/files/comparing_fractions_decimals_and_percents_worksheets.pdf
- https://cdn.shopify.com/s/files/1/0430/7327/4018/files/zonirijixunokur.pdf
- https://cdn.shopify.com/s/files/1/0432/4609/2443/files/hkey_local_machine_software_microsoft_windows_nt_currentversion_fonts.pdf
- https://cdn.shopify.com/s/files/1/0437/0300/9434/files/rizufilawefefadasafekap.pdf
- https://cdn.shopify.com/s/files/1/0431/5847/0816/files/53680341604.pdf
- https://cdn.shopify.com/s/files/1/0428/8797/0975/files/dunijamodetowolofosab.pdf
- https://cdn.shopify.com/s/files/1/0434/7641/8722/files/gumugosubisota.pdf
- https://cdn.shopify.com/s/files/1/0433/9944/6693/files/96314569759.pdf
- https://cdn.shopify.com/s/files/1/0431/8153/9483/files/fifufa.pdf
- https://cdn.shopify.com/s/files/1/0428/0988/4838/files/risegajas.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.

Filename	Kind	Source	Size
`font_00_sfnt_off000063d9.bin` `6a5961ac1c64c18a78f6ca91ba8c56fbfdf1753680e659e63d44120ec54c7d1c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x63D9	4880 bytes
`font_01_sfnt_off00007462.bin` `95fa8c2bbd706a5653ba0e81f095b5fee883d65c5432089aed566c4597944d1a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7462	9928 bytes
`font_02_sfnt_off0000965c.bin` `0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x965C	4324 bytes

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