PDF malware analysis — malicious · afda7dd3d2ed2ffa

MALICIOUS

PDF

41.8 KB Created: 2020-09-01 11:07:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: b72952e26a5cec8d54ab1bbcc685e34c SHA-1: 72e3742cccd6c9125850e7126bf084729d763117 SHA-256: afda7dd3d2ed2ffa28e9897a6622385cd6c06de77b9a3b70d39a1595058c276a

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF was flagged as malicious due to a critical heuristic indicating it links to known malicious redirector infrastructure. Additionally, it contains a large number of external PDF links, suggesting a link farm or SEO manipulation tactic. The primary malicious URL identified is https://ttraff.me/wix?keyword=food+webs+and+energy+pyramids+worksheets, which is likely used to redirect users to further malicious content.

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/wix?keyword=food+webs+and+energy+pyramids+worksheets
- https://static.usrfiles.com/ugd/b52961_b4b4e684e967440381e24268d458f044.pdf
- https://static.usrfiles.com/ugd/f1d680_fc8ae23931f74e15b3878f656b865486.pdf
- https://static.usrfiles.com/ugd/b91566_a66838f0013b415e83c4f164ba9bd329.pdf
- https://static.usrfiles.com/ugd/97aff7_116f7fbfa9c64dfe8dc6b1df7053a699.pdf
- https://static.usrfiles.com/ugd/fd7405_a1d288d355c94386a51a849252c620b7.pdf
- https://static.usrfiles.com/ugd/e3ff21_230780fbd13a47c1a85d2cf070abb3c7.pdf
- https://static.usrfiles.com/ugd/a382ee_af8b6ea3e8784f7c8cf52761d333046d.pdf
- https://static.usrfiles.com/ugd/b8c837_e7273b7c71ec4c0b95ebea59f1d08325.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/5903401900.pdf
- https://cdn.shopify.com/s/files/1/0429/6278/0311/files/pijinuzusutuku.pdf
- https://cdn.shopify.com/s/files/1/0428/8924/8924/files/saint_seiya_awakening_elite_train_hall_guide.pdf
- https://cdn.shopify.com/s/files/1/0469/9635/7272/files/shareholders_agreement_template_free_uk.pdf
- https://static.usrfiles.com/ugd/ea2f88_96d922dd885845f8967726b6d02357c5.pdf
- https://static.usrfiles.com/ugd/4117a9_4ba1ef7fb33042e19da013cbffb0b037.pdf
- https://static.usrfiles.com/ugd/6290de_a363a4c54d7541c28c1045e13edbe3df.pdf
- https://static.usrfiles.com/ugd/b8c837_e2f97d989bce4ff79a7d7a2b7692f33d.pdf
- https://static.usrfiles.com/ugd/599026_9d7440906233495c820cc6df752ac962.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_off0000632b.bin` `c1bd68ea6f59659bd019045dfabbdc2c2b857bab9e7da42b8aff260b01610cae`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x632B	5696 bytes
`font_01_sfnt_off0000767c.bin` `f253be5d5b6252f65ac71b42821fb48226242f19cdeb2e554545bbfd430cbc11`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x767C	10532 bytes

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