PDF malware analysis — malicious · 102a28ee805d0d7c

MALICIOUS

PDF

43.5 KB Created: 2020-08-29 23:19:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 74cc50e51d416f82bcc8d8bbeea5cfd7 SHA-1: 982df2ba362925bab5cee89be829e039d3077cbf SHA-256: 102a28ee805d0d7c6028c77fe0d393139835411ceae2db29ea7651cf1232f033

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains embedded links, one of which points to a known malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure related to gaming software. The presence of numerous external PDF links, many of which are benign, suggests a link farm or SEO manipulation tactic to obscure the malicious redirector.

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.com/wix?keyword=pinnacle+game+profiler+xbox+one+controller
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://www.daltonmaag.com/
- https://static.usrfiles.com/ugd/b8c837_41ca20bdd69f449092973dcd8338800b.pdf
- https://static.usrfiles.com/ugd/b91566_2179decee39d48319c3c7fdc5d8ba7de.pdf
- https://static.usrfiles.com/ugd/b8c837_6f8629d34a104fcbbdbd889419644290.pdf
- https://static.usrfiles.com/ugd/b8c837_8bc0202a14354e588fc094bff3d3c6d3.pdf
- https://static.usrfiles.com/ugd/b8c837_e4fa1653ca33411caa31b1ca406e597a.pdf
- https://static.usrfiles.com/ugd/b8c837_ee156484cb8940ff8acfb0f0c7cf1a97.pdf
- https://static.usrfiles.com/ugd/b8c837_052d99a1c8654a9eaa0a961d2708cee3.pdf
- https://static.usrfiles.com/ugd/b8c837_67f954714fd845bf9e5cb4d42bc17c94.pdf
- https://static.usrfiles.com/ugd/b8c837_ea71c40b953e43ccac0318b398318834.pdf
- https://static.usrfiles.com/ugd/b8c837_abff7d67d0614684a222a787738cb77b.pdf
- https://static.usrfiles.com/ugd/b8c837_b50ae81c0c974ae18ca70c8758801094.pdf
- https://static.usrfiles.com/ugd/b8c837_ec98312f23d4465883f3d64519f1ab75.pdf
- https://static.usrfiles.com/ugd/b8c837_4f523f56af1f483e92e1b8739e9867df.pdf
- https://static.usrfiles.com/ugd/b8c837_b35e1459d4fa47bc8b3588144cb7c50a.pdf
- https://static.usrfiles.com/ugd/b8c837_f4f2d3a8e00f4a29adb9ef6f804fe0dd.pdf
- https://static.usrfiles.com/ugd/b8c837_38c8f7ec8ff14a9e93db357aff1485b5.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00005e0d.bin` `093e92191b887960ee0f208ee9fc73b2ec8b8508e834884849c305d2ea982f37`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5E0D	5156 bytes
`font_01_sfnt_off00006f6b.bin` `e4c54c95440c6782106592decee1bb585ada5567b85f3e14d0645d25594649ed`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6F6B	10264 bytes
`font_02_sfnt_off00009284.bin` `9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9284	4324 bytes

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