PDF malware analysis — malicious · bdd714607efc1d2c

MALICIOUS

PDF

63.7 KB Created: 2020-08-10 07:43:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 074566e867b2a3b6eb782e38762ea4b8 SHA-1: 4aa7f497f0ee21680a776ffbc745712b6330cdf8 SHA-256: bdd714607efc1d2c3c2f2b2f594926476c5a3feffbbf2935d37700ced43fee11

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on 'cdn.shopify.com'. The document body, though heavily obfuscated, contains the same URL as the redirector, suggesting a deliberate attempt to lure users to malicious infrastructure. The ML classifier also strongly flagged this PDF as malicious.

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.com/pify?keyword=house+rental+agreement+format+in+kannada+pdf
- http://files.centralhauling.com/uploads/1/3/0/8/130814858/kexojanenenuv-juselarulam.pdf
- http://nupowi.leadingmenfiberarts.com/uploads/1/3/1/3/131383483/2044193.pdf
- http://files.childrenscauseoc.org/uploads/1/3/1/4/131408970/bd4224e9.pdf
- http://xodim.fflinstall.com/uploads/1/3/0/8/130814058/kukilitabedugize.pdf
- http://nupowi.lea
- https://cdn.shopify.com/s/files/1/0429/8211/3433/files/xuxokakuxam.pdf
- https://cdn.shopify.com/s/files/1/0434/7202/7814/files/kukajet.pdf
- https://cdn.shopify.com/s/files/1/0430/6350/9141/files/wakewatotusilak.pdf
- https://cdn.shopify.com/s/files/1/0437/6716/9173/files/86878742979.pdf
- https://cdn.shopify.com/s/files/1/0432/0873/6928/files/apprendre__parler_portugais.pdf
- https://cdn.shopify.com/s/files/1/0427/9628/6111/files/4762807334.pdf
- https://cdn.shopify.com/s/files/1/0448/1345/1430/files/bacillus_polymyxa.pdf
- https://cdn.shopify.com/s/files/1/0431/2875/0241/files/concierto_de_aranjuez_adagio_piano.pdf
- https://cdn.shopify.com/s/files/1/0428/0962/2691/files/pudetedasugamor.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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_006_off0000b5aa.bin` `ee940c2b3e495b87e3bec348ecefb1d95f67979e00d7d4e09b8d9f7f26214de4`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0xB5AA	7684 bytes
`font_00_sfnt_off00009973.bin` `3b89a1333aa93e194de12c5c5da229a8f3a969ace6b07a90c5323b9ece6747ec`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9973	2828 bytes
`font_01_sfnt_off0000a36e.bin` `c7347cd98e1f609c22e7c51fae13463c5cdf714145d7c9a56ad501c37985f4c4`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA36E	5388 bytes
`font_03_sfnt_off0000cc2f.bin` `7a041eebe02fed62188266a925deac6ba305a25c661ee76301851186f4f5894c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCC2F	10832 bytes

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