PDF malware analysis — malicious · 5234e1045370f03c

MALICIOUS

PDF

50.5 KB Created: 2020-09-06 11:54:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 9b54bfdd428e7d068fcbf87fe6b7885b SHA-1: fcd3779220ba1b2d8759176a6f81fc48008ffdf4 SHA-256: 5234e1045370f03cad63b3f9488f8e64a974639e262ea7403ee2a91fd47b7722

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, ttraff.me, disguised as a report on student felicitation. This heuristic, combined with the ML classifier flagging the PDF as malicious, strongly suggests a phishing or redirection attempt. The document body, though heavily obfuscated, contains the same lure text and the malicious URL, reinforcing the attack pattern. No scripts were extracted, limiting further analysis of payload delivery.

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=report+on+felicitation+of+meritorious+students
- https://static.usrfiles.com/ugd/23b571_88d40d8a43eb408384539d3f53b0c9af.pdf
- https://static.usrfiles.com/ugd/3ceeb9_b4e02b05251d4a8da7db8e8202cd6ad5.pdf
- https://static.usrfiles.com/ugd/2b25b5_4a73dbb101474aa894437922a31f0401.pdf
- https://static.usrfiles.com/ugd/e6e573_d4b74331d70e4d188f0ccf8593a66d8e.pdf
- https://static.usrfiles.com/ugd/e2c250_05b2e0b6f39a45ec9fc32b37c71bc427.pdf
- https://static.usrfiles.com/ugd/e3834b_8cf5c708e49544c18bb1d980e4026228.pdf
- https://static.usrfiles.com/ugd/353d00_0d25ae3e6a5349389a892e26d70576b8.pdf
- https://static.usrfiles.com/ugd/b8c837_2c354ab937614221a690f8e5650ebb8a.pdf
- https://static.usrfiles.com/ugd/429b25_63da17ba4e64434293bbfaede831e165.pdf
- https://static.usrfiles.com/ugd/b8c837_893dac0340ab4e1f8b41f172dcd4a74f.pdf
- https://cdn.shopify.com/s/files/1/0433/8742/0835/files/bhagwat_puran_in_gujarati.pdf
- https://cdn.shopify.com/s/files/1/0438/4981/0080/files/tumiguxuxorulag.pdf
- https://cdn.shopify.com/s/files/1/0427/6033/9623/files/change_din_kambi_song_djpunjab.pdf
- https://cdn.shopify.com/s/files/1/0463/3634/4226/files/rilajilefosowekozofifi.pdf
- https://cdn.shopify.com/s/files/1/0428/0962/2687/files/bivitoxorifutixagefu.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_off00007a4c.bin` `4c64928c61afccf96d90805a26e5fd855c916082432853d6085e3dbc132002d7`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7A4C	5192 bytes
`font_01_sfnt_off00008bdc.bin` `bfb2f3a9db5a090c7847cbe03b8f650ae286c8a98461276fc030bf3bb080ba5f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8BDC	10188 bytes
`font_02_sfnt_off0000aeca.bin` `b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xAECA	4324 bytes

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