PDF malware analysis — malicious · c6ec81f3b62cd394

MALICIOUS

PDF

48.2 KB Created: 2020-08-04 01:35:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 597191b257a43bb77ddae17d2ce7fd36 SHA-1: 54cc8518a493de30a5316279b8eb88a18b33fe14 SHA-256: c6ec81f3b62cd3942012aaff21d0806a743f634a9fe0d163d6c3d85738f14ab8

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a large number of embedded links, many of which point to a redirector service. The primary malicious link, https://ttraff.ru/pify?keyword=how+to+cite+pdf+found+online, is designed to lead users to further malicious content. The document body, though heavily obfuscated, contains references to citing PDFs online, likely a lure to encourage clicks on the embedded 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.ru/pify?keyword=how+to+cite+pdf+found+online
- http://files.fancycanary.com/uploads/1/3/1/4/131438453/6224309.pdf
- http://files.michellejestermain.com/uploads/1/3/2/7/132740905/4a69c9dce41.pdf
- http://files.thefreemath.org/uploads/1/3/1/3/131383838/vadexikagur-bosivokev-xedexejakozuze-vuvadaximuleriw.pdf
- http://files.apragp.org/uploads/1/3/0/8/130814200/miruxiwezobig-mufigor.pdf
- http://files.skinnatiouslbb.com/uploads/1/3/1/0/131070674/df5593372dcbc3f.pdf
- https://cdn.shopify.com/s/files/1/0427/8507/9452/files/53700655759.pdf
- https://cdn.shopify.com/s/files/1/0429/2512/9894/files/4127222145.pdf
- https://cdn.shopify.com/s/files/1/0429/5216/3481/files/digep.pdf
- https://cdn.shopify.com/s/files/1/0428/8466/1407/files/70153064662.pdf
- https://cdn.shopify.com/s/files/1/0434/4145/5254/files/88738637870.pdf
- https://cdn.shopify.com/s/files/1/0430/0485/4426/files/43986648409.pdf
- https://cdn.shopify.com/s/files/1/0428/2767/7852/files/sagozu.pdf
- https://cdn.shopify.com/s/files/1/0430/7789/4293/files/21347351204.pdf
- https://cdn.shopify.com/s/files/1/0435/5971/4971/files/zesubosanarabixixijelebav.pdf
- https://cdn.shopify.com/s/files/1/0434/3041/2437/files/66740214518.pdf
- https://cdn.shopify.com/s/files/1/0430/8199/0304/files/81607283184.pdf
- https://cdn.shopify.com/s/files/1/0430/3929/3589/files/unordered_list_html.pdf
- https://cdn.shopify.com/s/files/1/0438/1730/4226/files/tuvalokepevoxo.pdf
- https://cdn.shopify.com/s/files/1/0432/0477/1999/files/37449048767.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_off00007ed7.bin` `a66f3496752dd0b67099223fd4aa6c28ff3a1f53b20cbbdca3461638fb37fed8`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7ED7	4720 bytes
`font_01_sfnt_off00008f0f.bin` `1eca950113176cc01786501bbba3c51221fdc91e7baba66d81d96065dd8ecf2f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8F0F	10848 bytes

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