PDF malware analysis — malicious · f42d98941767d61f

MALICIOUS

PDF

53.7 KB Created: 2020-09-10 02:47:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a4fd7dc149151622ede1f788d4841599 SHA-1: b26309d014d4e5ca91a36035e810a8976b6289aa SHA-256: f42d98941767d61f2bdb614e9c748c49034a741c6f600ce8a7f51c8a210c6891

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, directing users to 'ttraff.link'. Additionally, it features a large number of embedded links, many pointing to Shopify domains, which is indicative of a link farm used for SEO poisoning or to obscure malicious destinations. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the primary attack vector appears to be social engineering through deceptive links.

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.link/wix?keyword=bekhayali+female+version+song+ming
- http://files.dog-gone-running.com/uploads/1/3/1/0/131070911/neborijerubu.pdf
- http://mafiluwul.txopioidcrisis.org/uploads/1/3/0/7/130739860/a1936.pdf
- http://files.thelrcollaborative.com/uploads/1/3/0/8/130873715/0a05e1e5c5f.pdf
- http://divesag.fearlesshealingtherapy.com/uploads/1/3/1/3/131398362/baregotivewirab.pdf
- http://vaxajun.trulymedium.com/uploads/1/3/2/3/132302921/7325384.pdf
- https://cdn.shopify.com/s/files/1/0438/2782/2749/files/cubital_tunnel_syndrome_exercises.pdf
- https://cdn.shopify.com/s/files/1/0431/4251/2797/files/87508464612.pdf
- https://cdn.shopify.com/s/files/1/0434/6612/9574/files/branchement_interrupteur_double_va_et_vient.pdf
- https://cdn.shopify.com/s/files/1/0432/2990/5058/files/the_sonnets_of_shakespeare.pdf
- https://cdn.shopify.com/s/files/1/0432/4301/2256/files/boyne_mountain_trail_map.pdf
- https://cdn.shopify.com/s/files/1/0428/0533/0083/files/88326146153.pdf
- https://cdn.shopify.com/s/files/1/0432/6978/3720/files/addition_of_similar_fractions.pdf
- https://static.usrfiles.com/ugd/ac51ce_4dcdef7b00fe46a8b7830667cd340d00.pdf
- https://static.usrfiles.com/ugd/3ed44c_b2d2d88e55be4a84823f944a1322c22a.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_off00006d68.bin` `e46ae26b80628b7eff7d618e18cbd534d77e11779146a6cf43935559ca867afa`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6D68	5456 bytes
`font_01_sfnt_off00007fe7.bin` `571c26739a060b0df75cef94b57e3f59ffdd87cb284a7b9488d9be318b4e1fa9`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7FE7	15304 bytes
`font_02_sfnt_off0000af9d.bin` `3cc5334aba9a0e5e19954cb610e09bde669c3dfc6bbd2d590f3c34bb9c18fdf7`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xAF9D	7776 bytes

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