PDF malware analysis — malicious · 06307f20e39a26ff

MALICIOUS

PDF

41.4 KB Created: 2020-08-31 13:24:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 2ca2fe85e7ad462f9f9500c131b833da SHA-1: 90ea4116f0834bf3239e95d4d6135b51e3f6b668 SHA-256: 06307f20e39a26ff5d19fdd3e639e24d27ae6d75707d005920047ac52c4d5c79

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, many of which point to a redirector service. The document body, though heavily obfuscated, contains text related to a service manual and a URL that appears to be a lure. The presence of numerous external links suggests an attempt to drive traffic to malicious infrastructure, likely for further exploitation or phishing.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

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.
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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=nv5600+transmission+service+manual
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://static.usrfiles.com/ugd/f3ecbe_e19cb74c847c4695a1a9c286c37321df.pdf
- https://static.usrfiles.com/ugd/9219f8_27341df2090b4b2482ee69e987f4e86c.pdf
- https://static.usrfiles.com/ugd/b8c837_bd1a8274c51f454a8fef573f351975b6.pdf
- https://static.usrfiles.com/ugd/912de2_7330fbcaadc44b45a8a680bfccb0e929.pdf
- https://static.usrfiles.com/ugd/b8c837_59a3f8f832df406fada6ea5a6ff290ce.pdf
- https://static.usrfiles.com/ugd/b8c837_791fd0c048c3440aaea525b831fe53db.pdf
- https://static.usrfiles.com/ugd/05900a_4671afcbe2fa4a2ab1e5987362b21876.pdf
- https://static.usrfiles.com/ugd/b8c837_7ae8175f7d8343578c7e89f811b1cad2.pdf
- https://static.usrfiles.com/ugd/45e30f_0321bf1269214eb0bbabecb9c6909289.pdf
- https://static.usrfiles.com/ugd/b8c837_f4f2d3a8e00f4a29adb9ef6f804fe0dd.pdf
- https://static.usrfiles.com/ugd/b8c837_1ea1c3959d844548b409d93a3d539406.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/
- http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00006540.bin` `9d293a3e488c6abc36b4f485db301d6aa7b5d1181f62694d7976982650a3eda3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6540	5396 bytes
`font_01_sfnt_off00007791.bin` `ffc0b35db734fa6871f0b410430875b28e94cdeb5878d7cc437cf84aabd9bd98`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7791	9848 bytes

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