PDF malware analysis — malicious · 4b3623562ebcaee2

MALICIOUS

PDF

43.6 KB Created: 2020-09-11 19:38:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 011a8373692dc8f53fb71e17d7cbacd7 SHA-1: bbfc63626f9e19219aa6d3efeb4ba4dec11690bb SHA-256: 4b3623562ebcaee2fcb1e5a5ac38f9e49d5804deb964d49b51c93fdc477584cb

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous embedded links, identified as a link farm, with a primary malicious redirector URL. The document body, though heavily obfuscated, contains the string 'Instagram story template after effects free' and the malicious URL 'https://ttraff.link/wix?keyword=instagram+story+template+after+effects+free', suggesting a lure for free content. The ML classifier also flagged this PDF with high confidence.

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=instagram+story+template+after+effects+free
- http://teduga.b-dogdesign.nl/uploads/1/3/1/4/131406535/6897724.pdf
- http://xazeduk.rsgymnastics.org/uploads/1/3/0/7/130776611/pijodeta.pdf
- http://files.deborahshulmanmsw.com/uploads/1/3/0/7/130775023/ximepevotajowu-suwopegure-kigupul-rovizumesewadu.pdf
- http://files.peteandlauren.com/uploads/1/3/1/0/131070420/mipavaru-kujibutik.pdf
- http://files.credorecoveryministry.org/uploads/1/3/1/1/131164204/vitefadimivu.pdf
- http://nalaki.jacksonchapelumc.org/uploads/1/3/2/7/132712116/daraxeladaloja.pdf
- http://zofot.plowbreakfarm.com/uploads/1/3/0/7/130776485/9564956.pdf
- http://denuzarag.apriloliviaroskos.com/uploads/1/3/1/6/131606968/filuvuge.pdf
- https://static.usrfiles.com/ugd/5cd33b_53523769744d416ea9f0149dc1df6790.pdf
- https://static.usrfiles.com/ugd/05900a_0472565f5a04433992bc71c0f685602a.pdf
- https://static.usrfiles.com/ugd/b7306e_859bd5b3281d41708766616d0d09e347.pdf
- https://static.usrfiles.com/ugd/70a38d_90fc8520d33746a4baaaaf1c113072e2.pdf
- https://static.usrfiles.com/ugd/eeb7bd_fddde43c3f2b4f25a5b14acdeb8ddf05.pdf
- https://static.usrfiles.com/ugd/eaf48f_3ce8d4c8b3ff44fe91fe5f0d5dd78d06.pdf
- https://static.usrfiles.com/ugd/a18aa6_87b7065912c44519a78df65340d02998.pdf
- https://static.usrfiles.com/ugd/278743_3b92beb8239d41a892de2582b3b3ac2a.pdf
- https://static.usrfiles.com/ugd/2f8cea_f6879b34337241488c9409ca4056cbcd.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_off00006baf.bin` `bbc77f28fb3e156008daff7d13a2735a1f76a63e155675edbe3591497282f4ce`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6BAF	5376 bytes
`font_01_sfnt_off00007df3.bin` `eeca14f29d667a5d3af393a7d5cf83c5f0e0eea30f6b9a0914489cce10b23375`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7DF3	10372 bytes

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