PDF malware analysis — malicious · 7aa34a5d97ce1f32

MALICIOUS

PDF

37.1 KB Created: 2020-09-04 23:31:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 0106fadbcc198d73b789dab6c49f5975 SHA-1: 97f2c1fb4918d3f38cfb57bbadc7b30fc9543f69 SHA-256: 7aa34a5d97ce1f32fcb311b96bc2c3e410dc5576d66f237dc6aa4036cded0142

150 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF contains a heuristic firing for a malicious redirector link, which is also present in the document body. The link leads to 'ttraff.me', a known malicious redirector. The document also contains a link farm heuristic, suggesting an attempt to manipulate search engine results or distribute content broadly. The ML classifier strongly indicates maliciousness. The primary attack vector appears to be social engineering through a seemingly legitimate document template to trick users into visiting a malicious URL.

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.me/pify?keyword=ihk+berichtsheft+vorlage+w%25C3%25B6chentlich+pdf
- https://cdn.shopify.com/s/files/1/0431/1960/7962/files/62685058341.pdf
- https://cdn.shopify.com/s/files/1/0440/8170/9206/files/fulapetugugawatoliz.pdf
- https://cdn.shopify.com/s/files/1/0459/9155/9327/files/muduvawewajeromizugu.pdf
- https://cdn.shopify.com/s/files/1/0437/6464/6037/files/jexamomifa.pdf
- https://static.usrfiles.com/ugd/b8c837_5c60dc9215f24256a5f9b967047a8e19.pdf
- https://static.usrfiles.com/ugd/0bfb20_ca126350074a4f36871f103a34b33f6f.pdf
- https://static.usrfiles.com/ugd/79e5df_fee1011571ce4b62919997409ea1b3c3.pdf
- https://static.usrfiles.com/ugd/e4ff69_7c7083edb5be433987be7abd2c2d6063.pdf
- https://static.usrfiles.com/ugd/e2c6c1_f51b3829cd2e4999a9aad05323f18646.pdf
- https://static.usrfiles.com/ugd/9757e7_3a40a6abccaf4fd09ceecbe8f7830ead.pdf
- https://static.usrfiles.com/ugd/136d07_9ad11210940046c7b0996a05d235380c.pdf
- https://static.usrfiles.com/ugd/804ff6_6abe409050a84aa495c9a18985c50e39.pdf
- https://cdn.shopify.com/s/files/1/0437/8935/3118/files/avast_antivirus_pour_android.pdf
- https://cdn.shopify.com/s/files/1/0430/6780/1749/files/buvexoze.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_off00004404.bin` `f1526c9d262fad538969a084460acf2834ebf5d4f78c878313594afceef15b43`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4404	5636 bytes
`font_01_sfnt_off000056ee.bin` `585d8e571d5cfee7f52c16490c4d2c974314cc65662953034d54f797045ac8e8`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x56EE	9788 bytes
`font_02_sfnt_off00007721.bin` `9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7721	4324 bytes

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