PDF malware analysis — malicious · 8119354e03c80d19

MALICIOUS

PDF

58.6 KB Created: 2020-08-29 22:44:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: ab0caf0f68faa9abe97b55eae21fe38c SHA-1: 137f70f2ec073a0d7f7446764658b0f6dcb9e8fa SHA-256: 8119354e03c80d19d3a42b1fe53e2eeb235d0c0fcd5aff41b35daf0da7e5dbd1

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it directs users to malicious infrastructure. Additionally, PDF_SEO_LINK_FARM suggests a large number of embedded links, likely for SEO manipulation or to host further malicious content. The primary malicious URL identified is https://ttraff.cc/wix?keyword=tko+je+tko+u+ndh+pdf, which is the most critical IOC. The document body, though heavily obfuscated, contains this URL, reinforcing its role in the attack.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

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/wix?keyword=tko+je+tko+u+ndh+pdf
- https://static.usrfiles.com/ugd/760101_8b13964630aa4c85834eb314880462a1.pdf
- https://static.usrfiles.com/ugd/b8c837_fa60f998f3ca46a0a3a5118adb8edc6e.pdf
- https://static.usrfiles.com/ugd/b8c837_8909ab8ff1564572a6854fbb4185c9a6.pdf
- https://static.usrfiles.com/ugd/c0b427_37ddac0d791549e9a728d9b372e8b711.pdf
- https://static.usrfiles.com/ugd/8de238_e9227e86aea44788ab0303ff5db8e4bf.pdf
- https://cdn.shopify.com/s/files/1/0430/3699/9842/files/bibojizosuxivaribe.pdf
- https://cdn.shopify.com/s/files/1/0438/1740/2530/files/94376064535.pdf
- https://cdn.shopify.com/s/files/1/0435/4398/6340/files/paxuzusoget.pdf
- https://cdn.shopify.com/s/files/1/0436/3347/5737/files/hackedgames._com_rise_of_the_kings.pdf
- https://cdn.shopify.com/s/files/1/0431/6767/8618/files/cuisinart_cbc_6400pc.pdf
- https://cdn.shopify.com/s/files/1/0428/8158/1209/files/filubomolujesoro.pdf
- https://cdn.shopify.com/s/files/1/0430/8166/2628/files/20652089562.pdf
- https://cdn.shopify.com/s/files/1/0430/0662/3903/files/cessna_150_poh.pdf
- https://cdn.shopify.com/s/files/1/0434/0383/7591/files/college_physics_knight_jones_field.pdf
- https://static.usrfiles.com/ugd/067ecb_94df92aca8d44426ab4eca0c958243ad.pdf
- https://static.usrfiles.com/ugd/b8c837_45d127f7681548068b15fb56c7872518.pdf
- https://static.usrfiles.com/ugd/299074_ff2b655d9a5e4fdab7c37f7281fc1059.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_off0000aa41.bin` `e82739eb8cb7de0c77938de4519eefd6f63535560eb8e1113610c90b7396967c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xAA41	4704 bytes
`font_01_sfnt_off0000ba50.bin` `68e74019ab27c26641aac25082fdbdc36aec229ea3bbf8e2727d75f1e47cc027`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xBA50	10208 bytes

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